A7N8X-VM/400 specifications summary
CPU Chipset Front Side Bus Memory Socket A for AMD Athlon XP 2700 MHz+ processors NVIDIA nForce2 IGP North bridge NVIDIA nForce2 MCP South bridge 400/333/266 MHz 2 x 184-pin DDR DIMM sockets support up to maximum 2 GB unbuffered PC2700/2100 non-ECC DDR SDRAM memory. Dual-channel memory architecture 3 x PCI 1 x AGP 8X (1.5V only) 2 x UltraDMA133 Integrated GeForce4 MX GPU Supports DVI (AGP-NV-DVI) and TV-out (AV/S) cards Realtek ALC650 6-channel audio CODEC S/PDIF in/out interface Realtek 8201BL 10/100 Mbps LAN PHY Super I/O integrated monitoring of CPU/chassis fan rotation and MB/CPU temperature 1 x Parallel 1 x Serial (COM1) 1 x PS/2 Keyboard 1 x PS/2 Mouse 1 x RJ45 port 1 x Audio I/O 1 x VGA port 4 x USB 2.0/1.x USB connector supports additional 2 USB 2.0 ports CPU/chassis FAN connectors Chassis intrusion connector 20-pin ATX power connector PANEL connector CD/AUX connectors S/PDIF in/out connector GAME/MIDI connector TV-out connector Serial (COM2) connector Front panel audio connector
Expansion slots Storage Graphics Audio LAN Hardware monitoring Rear panel ports

Internal connectors

(continued next page)
BIOS features Industry standard Manageability Support CD contents 4 Mb Flash ROM, AMI BIOS, ACPI, DMI2.0, WfM2.0, Green, PnP, TCAV, SMBIOS 2.3 ASUS EZ Flash, ASUS MyLogo2 PCI 2.2, USB 2.0 DMI 2.0, WOL by PME, WOR by PME, WO_USB, WO_KB/MS Device drivers ASUS PC Probe ASUS Update ASUS Screen Saver Adobe Acrobat Reader Anti-Virus Utility ASUS A7N8X-VM/400 series support CD UltraDMA133 cable FDD cable I/O shield User guide Micro-ATX form factor: 9.6 in x 9.6 in

Accessories

Form Factor
* Specifications are subject to change without notice.

Chapter 1

This chapter describes the features of the motherboard. It includes brief descriptions of the motherboard components, and illustrations of the layout, jumper settings, and connectors.

Product introduction

Welcome!
Thank you for buying the ASUS A7N8X-VM/400 motherboard! The ASUS A7N8X-VM/400 motherboard comes with the most advanced technologies to deliver maximum performance for Socket A processors. This motherboard is packed with value-added features for guaranteed consumer satisfaction. The following sections provide important technical information about the motherboard for future upgrades or system reconfiguration. Before you start installing the motherboard and hardware devices on it, check the items in your package with the list below.

Package contents

ASUS A7N8X-VM/400 motherboard Micro-ATX form factor: 9.6 in x 9.6 in ASUS A7N8X-VM/400 series support CD 40-pin 80-conductor ribbon cable for UltraDMA133 IDE drives Ribbon cable for a 3.5-inch floppy drive Bag of extra jumper caps I/O shield User guide
Check your ASUS A7N8X-VM/400 package for the following items.

Special features

400 MHz FSB support
The motherboard comes with a Socket 462 that supports the latest 400 MHz FSB AMD Athlon XP processor. This feature is guaranteed to give you a powerful and efficient computer platform.
Dual-channel DDR memory support
With the 128-bit Twinbank DDR memory architecture, the motherboard doubles the DDR333 bandwidth thus eliminating system bottlenecks. The motherboard is capable of performing at peak bandwidth of up to 5.4 GB/s assuring you of fast, reliable computing solution. See details on page 1-11.

AGP 8X support

AGP 8X (AGP 3.0) is the next generation VGA interface specification that enables enhanced graphics performance with high bandwidth speeds of up to 2.12 GB/s. See details on page 1-13.
Integrated GeForce4 MX GPU
This motherboard is equipped with an integrated GeForce MX GPU, a second-generation mainstream graphics processing unit designed to deliver the best graphics experience with its high texture content and scene complexity capabilities. See details on page 2-13.

ASUS MyLogo2

The ASUS MyLogo2 allows you to personalize and add style to your system with customizable boot logos. See pages 2-22 and 3-5 for details.

ASUS C.O.P.

The ASUS C.O.P. (CPU Overheating Protection) is a hardware protection circuit that automatically shuts down the system power before temperatures go high enough to permanently damage the CPU.

ASUS EZ Flash

With the ASUS EZ Flash, you can easily update the system BIOS even before loading the operating system. No need to use a DOS-based utility or boot from a floppy disk. See details on page 2-5.
Digital video output support
The DVO interface feature of this motherboard allows you to enjoy simultaneous digital display and TV output with the separately purchased ASUS AGP-NV-DVI and ASUS AV/S TV-out cards. See details on pages 1-13, 1-20, and 2-14.
ASUS A7N8X-VM/400 motherboard user guide

Motherboard components

Before you install the motherboard, learn about its major components and available features to facilitate the installation and future upgrades. Refer to the succeeding pages for the component descriptions.
Onboard LED. This onboard LED lights up if there is a standby power on the motherboard. This LED acts as a reminder to turn off the system power before plugging or unplugging devices. ATX power connector. This standard 20-pin connector connects to an ATX 12V power supply. The power supply must have at least 1A on the +5V standby lead (+5VSB). CPU socket. This is a Zero Insertion Force (ZIF) socket for AMD Athlon XP processors. Northbridge controller. The NVIDIA nForce2 IGP Northbridge controller chip supports a 64/128-bit DDR memory controller and up to 2GB of 333/266/200MHz DDR memory. The Northbridge controller is equipped with a maximum 128 MB integrated graphics UMA share memory for the onboard VGA. DDR DIMM sockets. Two Double Data Rate Dual Inline Memory Module (DDR DIMM) sockets are available for up to 2 GB of DDR SDRAM. This memory technology supplies data transfer rates up to 5.4 GB/s for 333MHz DDR SDRAM. IDE connectors. These dual-channel bus master IDE connectors support up to four UltraDMA133, PIO Modes 0-4 IDE devices. Both the primary (blue) and secondary (black) connectors are slotted to prevent incorrect insertion of the IDE cable. Floppy disk connector. This connector is for the provided FDD cable for the floppy disk drive. One side of the connector is slotted to prevent incorrect insertion of the FDD cable. Flash ROM. This 4 Mb LPC chip contains the programmable BIOS program. Super I/O chipset. ITE IT8712F-A offers support for a variety of I/O functions. Provides two high-speed UART compatible serial ports, and a parallel port with EPP and ECP capabilities. The Super I/O controller supports a floppy disk drive, PS/2 keyboard, and PS/2 mouse. Southbridge controller. This motherboard comes with the brand new NVIDIA nForce2 MCP integrated peripheral Southbridge controller. This controller communicates at 800 MB/s with the Northbridge chip for maximum bandwith required to support PCI, USB, and Fast Ethernet devices. The controller also supports standard UltraDMA133 and has separate data paths for each IDE channel. AGP slot. The Accelerated Graphics Port (AGP) slot supports 1.5 V AGP 8X/4X mode graphics cards for 3D graphics applications. The AGP slot also supports digital visual interface (DVI) cards for digital display on LCD monitors and projectors.

Super I/O

FPAUDIO SPDIF1

PCI 2 PCI 3
CLRTC1 CHASSIS1 COM2 USBPW56 GAME1 USB56

4Mb BIOS

Audio Codec

PANEL1

Motherboard installation
Unplug the power cord before installing the motherboard. Failure to do so may cause you physical injury and damage to motherboard components.
This motherboard uses the Micro ATX form factor.
1.6.1 Placement direction
When installing the motherboard, make sure that you place it into the chassis in the correct orientation. The edge with the external ports goes to the rear part of the chassis as indicated in the image below.

1.6.2 Screw holes

Place eight (8) screws into the holes indicated by circles to secure the motherboard to the chassis.
Do not overtighten the screws! Doing so may damage the motherboard.
Place this side towards the rear of the chassis

Before you proceed

Take note of the following precautions before you install motherboard components or change any motherboard settings. 1. Unplug the power cord from the wall socket before touching any component. 2. Use a grounded wrist strap or touch a safely grounded object or to a metal object, such as the power supply case, before handling components to avoid damaging them due to static electricity. 3. Avoid touching the ICs on components. 4. Whenever you uninstall any component, place it on a grounded antistatic pad or in the bag that came with the component. 5. Before you install or remove any component, ensure that the ATX power supply is switched off or the power cord is detached from the power supply. Failure to do so may cause severe damage to the motherboard, peripherals, and/or components.

Onboard LED

The motherboard comes with a standby power LED. The green LED lights up to indicate that the system is ON, in sleep mode, or in soft-off mode. This is a reminder that you should shut down the system and unplug the power cable before removing or plugging in any motherboard component. The illustration below shows the location of the onboard LED.

SB_PWR1

ON Standby Power

OFF Powered Off

A7N8X-VM/400 Onboard LED
Central Processing Unit (CPU)
The motherboard comes with a Socket A (462) that supports Athlon XP processors with QuantiSpeed data processing, large data caches, 3D enhancements and 400/333/266 MHz bus speeds. AMD Athlon XP processors offer gigahertz speeds to support all the latest computing platforms and applications.

CLRTC1

Normal (Default) Clear CMOS
A7N8X-VM/400 Clear RTC RAM

1.12 Connectors

This section describes and illustrates the connectors on the motherboard. 1. IDE connectors (40-1 pin PRI_IDE, SEC_IDE) This connector supports the provided UltraDMA133 IDE cable. Connect the cables blue connector to the primary (recommended) or secondary IDE connector, then connect the gray connector to the UltraDMA133 master device (hard disk drive) and the black connector to the UltraDMA133 slave device (hard disk drive). Pin 20 on each IDE connector is removed to match the covered hole on the UltraDMA cable connector. This prevents incorrect orientation when you connect the cables. For UltraDMA133 IDE devices, use a 40-pin 80-conductor cable.

SEC_IDE

NOTE: Orient the red markings (usually zigzag) on the IDE ribbon cable to PIN 1.
A7N8X-VM/400 IDE Connectors
2. Floppy disk drive connector (34-1 pin FLOPPY1) This connector supports the provided floppy drive ribbon cable. After connecting one end to the motherboard, connect the other end to the floppy drive. (Pin 5 is removed to prevent incorrect insertion when using cable connectors with a closed pin 5 slot.)

FLOPPY1

NOTE: Orient the red markings on the floppy ribbon cable to PIN 1
A7N8X-VM/400 Floppy Disk Drive Connector

PRI_IDE

3. ATX power connectors (20-pin ATXPWR1) These connectors connect to an ATX 12 V power supply. The plugs from the power supply are designed to fit these connectors in only one orientation. Find the proper orientation and push down the power plug firmly until the connectors fit.

ATXPWR1

+12.0VDC +5VSB PWR_OK COM +5.0VDC COM +5.0VDC COM +3.3VDC +3.3VDC +5.0VDC +5.0VDC -5.0VDC COM COM COM PS_ON# COM -12.0VDC +3.3VDC
A7N8X-VM/400 ATX Power Connector
If you will need to replace the power supply in the future, make sure that your new ATX 12 V power supply can provide 8 A on the +12 V lead and at least 1 A on the +5-volt standby lead (+5VSB). The minimum recommended wattage is 230W, or 300W for a fullyconfigured system. When the power supply is inadequate, the system may become unstable and may experience difficulty powering. 4. USB header (10-1 pin USB56) If the USB ports on the rear panel are inadequate, a USB connector is available for two additional USB ports. Connect one end the USB/GAME port module cable to this connector, then mount the USB/GAME port module to an open slot in the chassis.
USB56 A7N8X-VM/400 USB 2.0 Header
The USB/GAME port module is purchased separately.

USB+5V USB_P5USB_P5+ GND

USB+5V USB_P6USB_P6+ GND NC
5. GAME/MIDI connector (16-1 pin GAME1) This connector supports a GAME/MIDI port module. Connect the GAME/MIDI port module cable to this connector, then mount the USB/GAME port module to an open slot in the chassis. The GAME/MIDI port connects a joystick, a game pad for playing games, and/or MIDI devices for playing or editing audio files.

Chapter 2
This chapter tells how to change system settings through the BIOS Setup menus. Detailed descriptions of the BIOS parameters are also provided.

BIOS information

Managing and updating your BIOS
The following utilities allow you to manage and update the motherboard Basic Input/Output System (BIOS) setup. 1. AFUDOS (Updates the BIOS in DOS mode using a bootable floppy disk.) 2. ASUS EZ Flash (Updates the BIOS using a floppy disk during POST.) 3. ASUS Update (Updates the BIOS in Windows environment. See Chapter 3 for details.) Refer to the corresponding section for each utility.

Important notes

It is recommended that you save a copy of the original motherboard BIOS file to a bootable floppy disk in case you need to restore the BIOS in the future. Copy the original motherboard BIOS using the AFUDOS or the ASUS Update utilities. A working BIOS file for this motherboard is in the support CD. Use this file only when you do not have a copy of the original motherboard BIOS file in a floppy disk. Visit the ASUS website and download the latest BIOS file for this motherboard using the ASUS Update utility.
2.1.1 Creating a bootable floppy disk
1. Do either one of the following to create a bootable floppy disk. DOS environment Insert a 1.44 MB floppy disk into the drive. At the DOS prompt, type: format A:/S then press <Enter>. Windows 98SE/ME environment a. From your Windows desktop, click on Start, point to Settings, then click on Control Panel. b. Double-click on Add/Remove Programs icon from the Control Panel window. c. Click on the Startup Disk tab, then on Create Disk. button. d. Insert a 1.44 MB floppy disk when prompted. Follow the succeeding screen instructions to complete the process. 2. Copy the original (or the latest) motherboard BIOS to the bootable floppy disk.
2.1.2 Using AFUDOS to copy the current BIOS
The AFUDOS.EXE utility can also be used to copy the current system BIOS settings to a floppy or hard disk. The copy can be used as a backup in case the system BIOS fails or gets corrupted. 1. At the DOS prompt, type the command line: afudos /o<filename>, then press <Enter>. The filename can be any user provided filename of not more than eight (8) alpha-numeric characters for the main filename and three (3) alpha-numeric characters for the extension name. The BIOS information on the screen is for reference only. What you see on your screen may not be exactly the same as shown.
Main filename Extension name
A:\>afudos /oMYBIOS03.rom AMI Firmware Update Utility - Version 1.10 Copyright (C) 2002 American Megatrends, Inc. All rights reserved. Reading flash.. 0x0008CC00 (9%)
2. The utility will copy the current system BIOS by default to the floppy disk. Make sure that the floppy disk is not write-protected and have enough space (at least 600 KB) to store the file.

A:\>afudos /oMYBIOS03.rom AMI Firmware Update Utility - Version 1.10 Copyright (C) 2002 American Megatrends, Inc. All rights reserved. Reading flash.. done A:\>
When the BIOS copy process is complete, the utility returns to the DOS prompt.
2.1.3 Using AFUDOS to update the BIOS
Update the BIOS only if you are sure that updating revision will solve your problems. Careless updating may result to more problems with the motherboard!
1. Download an updated ASUS BIOS file from the Internet (www.asus.com), then save the file to the bootable floppy disk you created earlier. Write down the BIOS file name to a piece of paper. You need to type the exact BIOS file name at the prompt. 2. Copy the AFUDOS.EXE utility from the support CD to the bootable floppy disk that contains the BIOS file. 3. Boot the system from the floppy disk. 3. At the DOS prompt, type afudos /i<filename.rom> and then press <Enter>. 4. The utility starts to program the new BIOS information into the flash ROM. Several tasks are performed and the message done appears at the end of each task when programming is done.
A:\AFUDOS>afudos /ia7nvm400.rom AMI Firmware Update Utility - Version 1.10 Copyright (C)2002 American Megatrends, Inc. All rights reserved. Reading file.done Erasing flash.done Writing flash.0x0008CC00 (9%)
DO NOT shutdown or reset the system while updating the BIOS! Doing so may cause system boot failure! 5. After all tasks are performed, AFUDOS utility automatically exits to DOS.
A:\AFUDOS>afudos /ia7nvm400.rom AMI Firmware Update Utility - Version 1.10 Copyright (C)2002 American Megatrends, Inc. All rights reserved. Reading file.done Erasing flash.done Writing flash.done Verifying flash.done A:\
6. Reboot the system from the hard disk.
2.1.4 Using ASUS EZ Flash to update the BIOS
The ASUS EZ Flash feature allows you to easily update the BIOS without having to go through the long process of booting from a diskette and using a DOS-based utility. The EZ Flash is built-in the BIOS firmware so it is accessible by simply pressing <Alt> + <F2> during the Power-On Self Tests (POST).
To update the BIOS using ASUS EZ Flash:
1. Visit the ASUS website (www.asus.com) to download the latest BIOS file for your motherboard. Save the BIOS file to a floppy disk. 2. Reboot the system. 3. To launch EZ Flash, press <Alt> + <F2> during POST to display the following.
User recovery requested. Starting BIOS recovery. Checking for floppy.
If there is no floppy disk found in the drive, the error message Floppy not found! appears. If the correct BIOS file is not found in the floppy disk, the error message A7NVM400.ROM not found! is displayed. Make sure to rename the downloaded BIOS file as A7NVM400.ROM.
4. Insert the floppy disk that contains the BIOS file. If all the necessary files are found in the floppy disk, EZ Flash performs the BIOS update process and automatically reboots the system when done. DO NOT shutdown or reset the system while updating the BIOS! Doing so may cause system boot failure!

32-bit DataTransfer Mode [Disabled]
Enables you enable or disable 32-bit data transfer mode. Configuration option: [Disabled] [Enabled]

2.3.2 System Information

This menu displays the detailed information about the BIOS, processor, and system memory. The values for these fields are automatically detected. Refer to the screen capture below for reference.

Advanced menu

2.4.1 Chipset
Video Frame Buffer Size [ 32MB]
Sets the size of the video frame buffer. The settings on this field is valid only for motherboard models with onboard VGA controller. Configuration options: [Auto] [8MB] [16MB] [32MB] [64MB] [128MB]
Graphics Aperture Size [ 64MB]
Allows you to select the size of mapped memory for AGP graphic data. Configuration options: [32MB] [64MB] [128MB] [256MB] [512MB] [Disabled]
The [512MB] option is available only when you use an AGP 8X graphics card.

MDA Access Control [AGP]

Selects the MDA Access cycles direction. Configuration options: [AGP] [PCI]

Primary Video [PCI]

This option switches the PCI Bus scanning order while searching for a video card. This allows the user to select the type of Primary VGA in case of multiple video controllers. Configuration options: [PCI] [AGP/Onboard]
Onboard TV-out format [PAL]
Allows you to set the onboard TV-out standard. Configuration options: [PAL] [NTSC]
2.4.2 Onboard Devices Configuration
Onboard Floppy Controller [Enabled]
Allows you to enable or disable the onboard floppy controller. Configuration options: [Enabled] [Disabled]
Serial Port1 Address [3F8/IRQ4]
Allows you to set the address for the onboard serial port (COM1). Configuration options: [3F8/IRQ4] [2F8/IRQ3] [3E8/IRQ4] [2E8/IRQ3]
Serial Port2 Address [2F8/IRQ3]
Allows you to set the address for the onboard serial connector (COM2) connector. Configuration options: [3F8/IRQ4] [2F8/IRQ3] [3E8/IRQ4] [2E8/IRQ3]
Parallel Port Address [378]
Allows the BIOS to select the Parallel Port Base Address. Configuration options: [Disabled] [378] [278] [3BC]

Parallel Port Mode [ECP]

Allows the BIOS to select the Parallel Port Mode. Configuration options: [Normal] [EPP] [ECP] [EPP+ECP]
ECP Mode DMA Channel [DMA3]
Allows the BIOS to select the Parallel Port ECP DMA. Configuration options: [DMA0] [DMA1] [DMA3]

Parallel Port IRQ [IRQ7]

Allows the BIOS to select the Parallel Port IRQ. Configuration options: [IRQ5l] [IRQ7]
Onboard Game Port [Disabled]
Allows you to select the Game Port address or to disable the port. Configuration options: [Disabled] [200/300] [200/330] [208/300 [208/330]

Onboard MIDI Port [Disabled]
Allows you to select the MIDI Port address or to disable the port. Configuration options: [Disabled] [200/300] [200/330] [208/300 [208/330]
SMBUS Interface [Enabled]
Allows you to enable or disable the SMBus interface. Configuration options: [Enabled] [Disabled]
Audio CODEC Interface [Auto]
The BIOS auto-detects the onboard audio CODEC when you set this item to [Auto]. Select [Disable] to disable the audio CODEC. Configuration options: [Auto] [Disabled]

Onboard LAN [Enabled]

Allows you to disable or set to automatic the onboard LAN interface. Configuration options: [Enabled] [Disabled]

LAN Boot ROM [Disabled]

Allows you to disable or set to automatic the onboard boot ROM interface. Configuration options: [Disabled] [Auto]

2.4.3 PCIPnP

Plug and Play O/S [No]
Configures the Plug and Play O/S feature. If set to [No], the BIOS configures all the devices attached to the system. If set to [Yes], the operating system configures Plug and Play (PnP) devices not required for boot if the system has a Plug and Play operating system feature. Configuration options: [No] [Yes]

PCI Latency Timer [64]

Leave this field to the default setting [64] for best performance and stability. Configuration options: [32] [64] [96] [128] [160] [192] [224] [248]
Allocate IRQ to PCI VGA [Yes]
Select [Yes] to automatically assign IRQ to PCI VGA card if card requests IRQ. If set to [No], no IRQ is assigned even the card requests an IRQ. Configuration options: [Yes] [No]
Palette Snooping [Disabled]
Some non-standard VGA cards, such as graphics accelerators or MPEG video cards, may not show colors properly. Setting this option to [Enabled] corrects this problem. If you are using a standard VGA card, leave this option the default setting [Disabled]. Configuration options: [Disabled] [Enabled]
PCI IDE BusMaster [Enabled]

When this option is [Enabled], the BIOS uses the PCI bus mastering to read and write to IDE drives. Configuration options: [Enabled] [Disabled]
Offboard PCI/ISA IDE Card [Auto]
Allows the setting of the proper slot of installed PCI IDE cards. Some PCI IDE cards require this to be set to the PCI slot number that is holding the card. Configuration options: [Auto] [PCI Slot1] [PCI Slot2] [PCI Slot3] [PCI Slot4] [PCI Slot5] [PCI Slot6]
IRQ3, IRQ4, IRQ5, IRQ7, IRQ9, IRQ10, IRQ11, IRQ14, IRQ15 [Available]
Specifies whether an IRQ is reserved or available for use by Legacy ISA devices. Configuration options: [Available] [Reserved]
DMA Channel 0, 1, 3, 5, 6, 7 [Available]
Specifies whether a DMA Channel is reserved or available for use by Legacy ISA devices. Configuration options: [Available] [Reserved]
Reserved Memory Size [Disabled]
Specifies the reserved memory block for use of legacy ISA devices. Configuration options: [Disabled] [16k] [32k] [64k]

Power menu

The Power menu allows you to reduce power consumption. This feature turns off the video display and shuts down the hard disk after a period of inactivity.
Suspend Mode [S1 & S3 (STR)]
Allows the BIOS to select the ACPI state used for System Suspend. Configuration options: [S1 & S3 (STR)] [S1 (POS) only]

2.5.1 Power Up Control

Restore on AC Power Loss [Power Off]
When set to Power Off, the system goes into off state after an AC power loss. When set to Power On, the system goes on after an AC power loss. When set to Last State, the system goes into either off or on state whatever was the system state before the AC power loss. Configuration options: [Power Off] [Power On] [Last State]
Resume on Keyboard [Disabled]
Allows you to use the keyboard keys to turn on the system. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]
Resume on PS/2 Mouse [Disabled]
Allows you to use the PS/2 mouse to turn on the system. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]

PME Resume [Disabled]

Enables or disables PME to generate a wake event. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]
Ring In Resume [Disabled]
Enables or disables RI to generate a wake event. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]
Onboard LAN Resume [Disabled]
Enables or disables the onboard LAN to generate a wake event. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]

RTC Resume [Disabled]

Enables or disables RTC to generate a wake event. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]

2.5.2 Hardware Monitor

MB Temperature [xxxC/xxxF] CPU Temperature [xxxC/xxxF]
The onboard hardware monitor automatically detects and displays the motherboard, CPU, and power temperatures
CPU Fan Speed [xxxxRPM] or [Disabled] Chassis Fan Speed [xxxxRPM] or [Disabled]
The onboard hardware monitor automatically detects and displays the CPU, chassis, and power fan speeds in rotations per minute (RPM). If any of the fans is not connected to the motherboard, that field shows 0RPM.
VCORE Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage
The onboard hardware monitor automatically detects the voltage output through the onboard voltage regulators.

Boot menu

1st, 2nd, 3rd Boot Device
Specifies the boot sequence from the available devices. Additional plug-in boot devices installed appear in sequence after the list of current boot devices. Configuration fields include Floppy Drive, IDE Hard Drive, ATAPI CD-ROM, and Other Boot Device.
2.6.1 Boot Settings Configuration

Quick Boot [Enabled]

Allows BIOS to skip certain tests while booting. This will decrease the time needed to boot the system. Configuration options: [Disabled] [Enabled]
Full Screen Logo [Enabled]
When [Enabled], MyLogo is displayed instead of the POST messages. Setting to [Disabled] displays the normal POST messages. Configuration options: [Disabled] [Enabled] Make sure that the Full Screen Logo item is set to [Enabled] if you want to use the ASUS MyLogo2 feature.
AddOn ROM Display Mode [Force BIOS]
Sets the display mode for the option ROM. Configuration options: [Force BIOS] [Keep Current]

Bootup Num-Lock [On]

Selects the power-on state for the NumLock key. Configuration options: [On] [Off]
Wait for F1 If Error [Enabled]
Sets whether to wait for F1 key to be pressed if an error occurs. Configuration options: [Enabled [Disabled]]
Hit Del Message Display [Enabled]
Toggles the display of Press DEL to run Setup. Configuration options: [Enabled] [Disabled]
Interrupt 19 Capture [Disabled]
When [Enabled], it allows option ROMs to trap interrupt 19. This is required by some PCI cards that provide a ROM based setup utility. Configuration options: [Disabled] [Enabled]

Password Check [Setup]

When set to [Setup], BIOS checks for user password when accessing the Setup utility. When set to [Always], BIOS checks for user password both when accessing Setup and booting the system. Configuration options: [Setup] [Always]

Exit menu

When you have made all of your selections from the various menus in the Setup program, save your changes and exit Setup. Select Exit from the menu bar to display the following menu.
Exit Options Exit & Save Changes Exit & Discard Changes Discard Changes Load Setup Defaults
Exit system setup after saving the changes. F10 key can be used for this operation.
Pressing <Esc> does not immediately exit this menu. Select one of the options from this menu or <F10> from the legend bar to exit.

Exit & Save Changes

Once you are finished making your selections, choose this option from the Exit menu to ensure the values you selected are saved to the CMOS RAM. The CMOS RAM is sustained by an onboard backup battery and stays on even when the PC is turned off. When you select this option, a confirmation window appears. Select [Yes] to save changes and exit.
If you attempt to exit the Setup program without saving your changes, the program prompts you with a message asking if you want to save your changes before exiting. Pressing <Enter> saves the changes while exiting.
Exit & Discard Changes
Select this option only if you do not want to save the changes that you made to the Setup program. If you made changes to fields other than system date, system time, and password, the BIOS asks for a confirmation before exiting.

Discard Changes

Allows you to discard the selections you made and restore the previously saved values. After selecting this option, a confirmation appears. Select [Yes] to discard any changes and load the previously saved values.

Load Setup Defaults

Allows you to load the default values for each of the parameters on the Setup menus. When you select this option or if you press <F5>, a confirmation window appears. Select [Yes] to load default values. Select Exit Saving Changes or make other changes before saving the values to the non-volatile RAM.

Chapter 3

This chapter describes the contents of the support CD that comes with the motherboard package.

Software support

Installing an operating system
This motherboard supports Windows 98SE/ME/NT/2000/XP as well as Linux RedHat, SuSE, TurboLinux and Caldera operating systems (OS). Always install the latest OS version and corresponding updates so you can maximize the features of your motherboard.

Because motherboard settings and hardware options vary, the support CD screens presented in this chapter are for general reference only. Refer to your OS documentation for more information.

Support CD information

The support CD that came with the motherboard contains useful software and several utility drivers that enhance the motherboard features.
The contents of the support CD are subject to change at any time without notice. Visit the ASUS website for updates.
3.2.1 Running the support CD
To begin using the support CD, insert the CD to your optical drive. The CD automatically displays the Drivers menu if Autorun is enabled in your computer.

Click an item to install

Click an icon to display more information
If Autorun is NOT enabled in your computer, browse the contents of the support CD to locate the file ASSETUP.EXE from the BIN folder. Double-click the ASSETUP.EXE to run the CD.

3.2.2 Drivers menu

The drivers menu shows the available device drivers if the system detects installed devices. Install the necessary drivers to activate the devices.
Screen display and driver options may not be the same for other operating system versions.

NVIDIA Display Driver

Installs the NVIDIA display driver for the onboard VGA.

NVIDIA nForce Driver

Installs the driver for the NVIDIA nForce chipset.

USB 2.0 Driver

Installs the USB 2.0 driver.

3.2.3 Utilities

The Utilities tab displays the applications that the motherboard supports.
ASUS A7NVM400 motherboard support CD for Windows XP Home/Professional
ASUS PC Probe V2.23.03 ASUS Update V5.30.01 Anti-virus Utility ADOBE Acrobat Reader V5.0 ASUS Screen Saver

ASUS PC Probe

This convenient utility continuously monitors your computer systems vital components such as fan rotations, CPU temperature, and system voltages, and alerts you on any detected problems. This utility helps you keep your computer at a healthy operating condition.

ASUS Update

Allows you to download the latest version of the BIOS from the ASUS website. Before using the ASUS Update, make sure that you have an Internet connection so you can connect to the ASUS website. See page 2-7 for details on how to install and use the ASUS Update.

Anti-virus Utility

The anti-virus application scans, identifies, and removes computer viruses. View the online help for detailed information.

Adobe Acrobat Reader

Installs the Adobe Acrobat Reader. The Acrobat Reader software is for viewing files saved in Portable Document Format (PDF).

A7N8X-VM specifications summary
CPU Chipset Front Side Bus (FSB) Memory Socket A for AMD Athlon / Athlon XP 3000+ or above 333 MHz FSB Support
Northbridge: NVIDEA nFORCE2 IGP Southbridge: NVIDEA nFORCE2 MCP 333/266 MHz 2 x 184-pin DDR DIMM Sockets Max. 2 GB unbuffered PC2700/2100 non-ECC DDR RAM memory 3 x PCI 1 x AGP 8X (1.5V only) 2 x UltraDMA 133/100/66/33 RealTek ALC650 6-channel audio CODEC linked w/ South Bridge 1Port Realtek 8201BL PHY ASUS C.O.P. (CPU Overheating Protection) Supports S/PDIF in/out 1 x Parallel 1 x Serial 1 x PS/2 keyboard 1 x PS/2 mouse 1 x RJ-45 port 1 x Audio I/O 1 x VGA port 2 x USB 2.x USB 1.1 connectors support 4 additional USB2.0 ports CPU/Chassis fan connectors 20-pin ATX power connector PANEL connector CD / AUX S/PDIF in/out connector TV out connector Front panel audio connector (optional) 4Mb Flash ROM, ACPI 2.0, AMI BIOS, TCAV, PnP, DMI2.0, DMI, Green, SMBIOS 2.3 PCI 2.2, USB 1.1/2.0 DMI 2.0, WOL, WOR, WO_USB, WO_KB/MS, SM Bus Micro-ATX form factor: 9.6 in x 8.6 in (24.5 cm x 21.9 cm)
Expansion slots IDE Audio (optional) LAN (optional) Special features Back panel I/O Ports

Internal I/O Connectors

BIOS features
Industry standard Manageability Form Factor
* Specifications are subject to change without notice.

Chapter 1

ASUS A7N8X-VM Motherboard

Motherboard Info

This chapter gives information about the ASUS A7N8X-VM motherboard that came with the system.This chapter includes the motherboard layout, jumper settings, and connector locations.

Welcome!

Thank you for buying the ASUS A7N8X-VM motherboard! The ASUS A7N8X-VM motherboard is loaded with the most advanced technologies to deliver the maximum performance for socket A processors. This motherboard is loaded with value-added features for guaranteed consumer satisfaction. For future upgrades or system reconfiguration, this chapter provides technical information about the motherboard.
1.2 Motherboard components
ATX power connector. This standard 20-pin connector connects to an ATX 12V power supply. The power supply must have at least 1A on the +5V standby lead (+5VSB). CPU Sockets. Socket 462 (Socket A) Zero Insertion Force (ZIF) socket for the AMD Athlon/Athlon XP 3000+ processors or higher. NorthBridge Controller. The NVIDIA nForce2 IGP North Bridge controller chipset. The controller supports a 64/128bit DDR memory controller and up to 2 GB of 333/266/200MHz DDR memory. DDR DIMM Sockets. Equipped with two Double Data Rate Dual Inline Memory Module (DDR DIMM) sockets to support up to 2GB of DDR DRAM, the newest memory standard with the highest bandwidth and lowest latency currently available. This memory technology supplies data transfer rates up to 5.4GB/s for 333MHz DDR SDRAM. IDE Connectors. These dual-channel bus master IDE connectors support up to four Ultra DMA133/100/66, PIO Modes 3 & 4 IDE devices. Both the primary(blue) and secondary(black) connectors are slotted to prevent incorrect insertion of the IDE ribbon cable. Floppy Disk connector. This connector connects the provided ribbon cable for the floppy disk drive. One side of the connector is slotted to prevent incorrect insertion of the floppy disk cable. Flash ROM. This 4Mb firmware contains the programmable BIOS program. Super I/O chipset. ITE IT8712F-A offers support for a variety of I/O functions. Provides two high-speed UART compatible serial ports and one parallel port with EPP and ECP capabilities. UART2 can also be directed from COM2 to the Infrared Module for wireless connections. The Super I/O controller supports a floppy disk drive, PS/2 keyboard, and PS/2 mouse. South bridge controller. Features the brand new NVIDIA MCP integrated peripheral South Bridge controller operates at 800MB/sec to communicate with the North Bridge for maximum bandwith required for PCI, USB and support for Fast Ethernet devices. The controller supports standard UltraDMA133/100/66/33 and separate data paths for each IDE channel are built-in for up to two IDE devices. The controller supports six USB ports, one LAN port and is PCI rev2.2 compliant. AGP Slot. This Accelerated Graphics Port (AGP) slot only supports 1.5V AGP 8X mode graphics cards for 3D graphical applications. CNR slot. The Communications and Networking Riser (CNR) slot supports interface cards that integrates audio, modem, and network functionality. Audio CODEC. The Realtek 6-channel CODEC is an AC97 compliant audio CODEC designed for PC multimedia systems. Chapter 1: Motherboard Information

1.5 Central Processing Unit (CPU)
The motherboard provides a Socket A (462) for CPU installation. AMD processors offer gigahertz speeds to support all the latest computing platforms and applications. The A7N8X-VM supports Athlon XP processors with QuantiSpeed data processing, large data caches, 3D enhancements and 333/266Mhz bus speeds.
CPU NOTCH TO INNER CORNER

LOCK LEVER

AMD CPU A7N8X-VM Socket 462

CPU NOTCH

Each AMD CPU has a marked corner. This corner is usually indicated with a notch, and/or a golden square or triangle. Refer to this indicator while orienting the CPU.

1.6 System memory

The motherboard has two Double Data Rate (DDR) DIMM sockets that supports up to 2GB non-ECC PC2700/2100 DDR DIMMs.

104 Pins

80 Pins
A7N8X-VM 184-Pin DDR DIMM Sockets
A DDR DIMM is keyed with a notch so that it fits in only one direction. DO NOT force a DIMM into a socket to avoid damaging the DIMM.

Installing a DIMM

1. Unlock a DIMM socket by pressing the retaining clips outward. 2. Align a DIMM on the socket. Make sure the notches on the DIMM exactly match the notches in the socket. 3. Firmly insert the DIMM into the socket until the retaining clips lock into place.

1.7 Expansion slots

The A7N8X-VM motherboard has five (5) expansion slots. The following subsections describe the slots and the expansion cards that they support.
Configuring an expansion card
Some expansion cards need an IRQ to operate. Generally, an IRQ must be exclusively assigned to one function at a time. In a standard design configuration, 16 IRQs are available but most are already in use.
Normally, 6 IRQs are free for expansion cards. Sometimes IRQs are shared by more than one function; in this case, IRQ assignments are swapped automatically or adjusted through the BIOS firmware.
IRQ 2 3* 4* 5* 6 7* 8 9* 10* 11* 12* 13 14* 15*
Standard Interrupt Assignments
Standard Function System Timer Keyboard Controller Programmable Interrupt Controller USB Universal Host Controller Communications Port (COM1) Onboard Audio Standard Floppy Disk Controller Printer Port (LPT1) System CMOS/Real Time Clock Onboard LAN USB Universal Host Controller Onboard VGA PS/2 Compatible Mouse Port Numeric Data Processor Ultra ATA Controller Secondary Ultra ATA Controller
*These IRQs are usually available for ISA or PCI devices. IRQ assignments for this motherboard
PCI slot 1 PCI slot 2 PCI slot 3 A used B C used D used

1.7.3 AGP slot

This motherboard has an Accelerated Graphics Port (AGP) slot that supports +1.5V AGP 8X cards. Note the notches on the card golden fingers to ensure that they fit the AGP slot on your motherboard.

AGP Card without Retention Notch
A7N8X-VM Accelerated Graphics Port (AGP8X)

CNR slot

The Communications and Networking Riser (CNR) slot supports interface cards that integrates audio, modem, and network functionality. The CNR specification supports interfaces including: Audio Codec 97 (AC 97) - for audio and/or modem functions Local Area Network (LAN) - for networking functions Universal Serial Bus (USB) - for functions implemented in the USB interface, and technologies such as broadband, DSL, and wireless System Management Bus (SMB) - for Plug-n-Play functionality Power - to provide the signals required for power management, and the main power supplies to operate the CNR circuitry
The CNR is tagged to replace the current Audio Modem Riser (AMR) slot because of its flexibility and added features. Also, the CNR slot does not take up the motherboard space for one PCI slot because it is a shared slot; rather, it provides you more options.
A7N8X-VM Communication & Networking Riser Slot

1.8 Jumpers

This section describes and illustrates the jumpers on the motherboard. 1. USB device wake-up (3-pin USBPWR12,USBPWR34,USBPWR56) Set these jumpers to +5V to wake up the computer from S1 sleep mode (CPU stopped, DRAM refreshed, system running in low power mode) using the connected USB devices. Set to +5VSB to wake up from S3 sleep mode (no power to CPU, DRAM in slow refresh, power supply in reduced power mode). Both jumpers are set to pins 1-2 (+5V) by default because not all computers have the appropriate power supply to support this feature. The USBPWR12 and USBPWR34 jumpers are for the rear USB port. USBPWR56 is for the internal USB header that you can connect to the front USB ports. This feature requires a power supply that can provide at least 2A on the +5VSB lead when these jumpers are set to +5VSB. Otherwise, the system does not power up. The total current consumed must NOT exceed the power supply capability (+5VSB) whether under normal condition or in sleep mode.

+5V +5VSB (Default)

+5VSB (Default) +5VSB (Default)

USBPWR56

A7N8X-VM USB Device Wake Up
2. Clear RTC RAM (CLRTC1) This jumper clears the Real Time Clock (RTC) RAM of date, time and system setup parameters in CMOS. The RAM data in CMOS is powered by the onboard button cell battery. To erase the RTC RAM: 1. Turn OFF the computer and unplug the power cord. 2. Remove the battery. 3. Move the jumper caps from [1-2] to [2-3] momentarily. Replace the jumper cap to the original position, [1-2]. 4. Re-install the battery. 5. Plug the power cord and turn ON the computer. 6. Hold down the <Del> key during the boot process and enter BIOS setup to re-enter data.

ATXPWR1

+12.0VDC +5VSB PWR_OK COM +5.0VDC COM +5.0VDC COM +3.3VDC +3.3VDC +5.0VDC +5.0VDC -5.0VDC COM COM COM PS_ON# COM -12.0VDC +3.3VDC
A7N8X-VM ATX Power Connector
If you will need to replace the power supply in the future, make sure that your new ATX 12V power supply can provide 8A on the +12V lead and at least 1A on the +5-volt standby lead (+5VSB). The minimum recommended wattage is 230W, or 300W for a fully configured system. The system may become unstable and may experience difficulty powering up if the power supply is inadequate.
USB headers (10-1 pin USB34, USB56) If the USB 2.0 port connectors on the back panel are inadequate, one USB header is available for four additional USB port connectors. Connect a 2-port USB connector set to a USB header and mount the USB bracket to an open slot in the chassis.
NC GND USB_P6+ USB_P6USB+5V GND USB_P5+ USB_P5USB+5V

A7N8X-VM USB 2.0 Header

USB+5V USB_P5USB_P5+ GND
USB+5V USB_P6USB_P6+ GND NC
CPU, Chassis and Power Fan Connectors (3-pin CPU_FAN1, CHA_FAN1) The fan connectors support cooling fans of 350mA~740mA (8.88W max.) or a total of 1A~2.22A (26.64W max.) at +12V. Connect the fan cables to the fan connectors on the motherboard, making sure that the black wire of each cable matches the ground pin of the connector.

Rotation +12V GND

GND +12V Rotation
A7N8X-VM 12-Volt Cooling Fan Power
Do not forget to connect the fan cables to the fan connectors. Lack of sufficient air flow within the system may damage the motherboard components. These are not jumpers! DO NOT place jumper caps on the fan connectors! 7. Chassis intrusion connector (4-1 pin CHASSIS1) This lead is for a chassis designed with intrusion detection feature. This requires an external detection mechanism such as a chassis intrusion sensor or microswitch. When you remove any chassis component, the sensor triggers and sends a high-level signal to this lead to record a chassis intrusion event. By default, the pins labeled Chassis Signal and Ground are shorted with a jumper cap. If you wish to use the chassis intrusion detection feature, remove the jumper cap from the pins.

CHASSIS1

Chassis Signal GND

(Default)

A7N8X-VM Chassis Alarm Lead

+5VSB_MB

Front panel audio connectors (10-1 pin FPAUDIO1) This is an interface for the Intel front panel audio cable that allow convenient connection and control of audio devices.

AGND +5VA BLINE_OUT_R

FPAUDIO1
MIC2 MICPWR Line out_R NC Line out_L

A7N8X-VM Front Panel Audio Connector
Without frontpanel connected you have to set jumpers to Line out_R -> BLINE_OUT_R and Line out_L -> BLINE_OUT_L
OnBoard LED The green Light Emitting Diode (LED) lights-ON if there is standby power and lights-OFF when the power is turned off. The red LED lights on when an incorrect AGP card is inserted.

ON Standby Power

OFF Powered Off

A7N8X-VM Onboard LED

BLINE_OUT_L
10. Internal audio connectors (4-pin CD1, AUX1) These connectors allow you to receive stereo audio input from sound sources such as a CD-ROM, TV tuner, MPEG card or modem.

AUX1 (White) CD1 (Black)

Left Audio Channel Ground Right Audio Channel
A7N8X-VM Internal Audio Connectors
11. Digital Audio Connector (6 pin SPDIF) (optiopnal) This connector is for optional S/PDIF audio module that allows digital instead of analog sound input and output.

SPDIF_OUT +5V

SPDIF_IN
A7N8X-VM Digital Audio Connector
When you input sound for S/PDIF IN, the LINE_OUT will output the sound. Mute LINE_OUT to impede sound output from S/PDIF IN.

(optional)

13. TV out connector (6-1 pin TV_OUT) This 6-1 pin connector connects to the front panel daughter card with the audio and tv-out ports.
A7N8X-VM TV Out Connector
15. System panel connector (20-pin PANEL1) This connector accommodates several system front panel functions.

Keyboard Lock Power LED

PLEDKeylock Ground PLED+

Speaker Connector

+5V Ground Ground Speaker
ExtSMI# Ground PWR Ground

+5V IDELED

IDE LED
Reset SW ATX Power Switch*

SMI Lead

A7N8X-VM System Panel Connectors
* Requires an ATX power supply.
System Power LED Lead (3-1 pin PLED) This 3-1 pin connector connects to the system power LED. The LED lights up when you turn on the system power.
Keyboard Lock Lead (2-1 pin KEYLOCK) This 2-1 pin connector connects to the case-mounted switch to allow the use of the keyboard lock feature.

Reset Ground

System Warning Speaker Lead (4-pin SPEAKER) This 4-pin connector connects to the case-mounted speaker and allows you to hear system beeps and warnings.
System Management Interrupt Lead (2-pin SMI) This 2-pin connector permits switching to suspend mode, or Green mode, in which system activity is instantly decreased to save power and to expand the life of certain system components.
Reset Switch (2-pin RESET) This 2-pin connector connects to the case-mounted reset switch for rebooting the system without turning off the power switch.
ATX Power Switch / Soft-Off Switch Lead (2-pin PWR) This connector connects a switch that controls the system power. Pressing the power switch turns the system between ON and SLEEP, or ON and SOFT OFF, depending on the BIOS or OS settings. Pressing the power switch while in the ON mode for more than 4 seconds turns the system OFF.

Hard Disk Activity Lead (2-pin IDELED) This connector supplies power to the hard disk activity LED. The read or write activities of any device connected to the primary or secondary IDE connector cause this LED to light up.

Chapter 2

BIOS Information
This chapter gives information about the ASUS A7N8X-VM Basic Input/Output System (BIOS).This chapter includes updating the BIOS using the ASUS AFLASH BIOS that is bundled with the support CD.

2.1 BIOS Setup program

Use the BIOS Setup program when you are installing a motherboard, reconfiguring your system, or prompted to Run Setup. This section explains how to configure your system using this utility. Even if you are not prompted to use the Setup program, you may want to change the configuration of your computer in the future. For example, you may want to enable the security password feature or make changes to the power management settings. This requires you to reconfigure your system using the BIOS Setup program so that the computer can recognize these changes and record them in the CMOS RAM of the EEPROM. The EEPROM on the motherboard stores the Setup utility. When you start up the computer, the system provides you with the opportunity to run this program. Press <Delete> during the Power-On Self Test (POST) to enter the Setup utility, otherwise, POST continues with its test routines. The Setup program is designed to make it as easy to use as possible. It is a menudriven program, which means you can scroll through the various sub-menus and make your selections among the predetermined choices.
Because the BIOS software is constantly being updated, the following BIOS setup screens and descriptions are for reference purposes only, and may not exactly match what you see on your screen.

2.1.1 BIOS menu bar

The top of the screen has a menu bar with the following selections: MAIN ADVANCED POWER BOOT EXIT Use this menu to make changes to the basic system configuration. Use this menu to enable and make changes to the advanced features. Use this menu to configure and enable Power Management features. Use this menu to configure the default system device used to locate and load the Operating System. Use this menu to exit the current menu or to exit the Setup program.
To access the menu bar items, press the right or left arrow key on the keyboard until the desired item is highlighted.
Chapter 2: BIOS Information

2.1.2 Legend bar

At the bottom of the Setup screen is a legend bar. The keys in the legend bar allow you to navigate through the various setup menus. The following table lists the keys found in the legend bar with their corresponding functions. Navigation Key(s)

<F1> or <Alt + H> <Esc> Left or Right arrow Up or Down arrow - (minus key) + (plus key) or spacebar <Enter> <Home> or <PgUp> <End> or <PgDn> <F5> <F10>

Function Description

Displays the General Help screen from anywhere in the BIOS Setup Jumps to the Exit menu or returns to the main menu from a sub-menu Selects the menu item to the left or right Moves the highlight up or down between fields Scrolls backward through the values for the highlighted field Scrolls forward through the values for the highlighted field Brings up a selection menu for the highlighted field Moves the cursor to the first field Moves the cursor to the last field Resets the current screen to its Setup Defaults Saves changes and exits Setup

General help

In addition to the Item Specific Help window, the BIOS setup program also provides a General Help screen. You may launch this screen from any menu by simply pressing <F1> or the <Alt> + <H> combination. The General Help screen lists the legend keys and their corresponding functions.
Saving changes and exiting the Setup program
See 2.7 Exit Menu for detailed information on saving changes and exiting the setup program. When a scroll bar appears to the right of a help window, it indicates that there is more information to be displayed that will not fit in the window. Use <PgUp> and <PgDn> or the up and down arrow keys to scroll through the entire help document. Press <Home> to display the first page, press <End> to go to the last page. To exit the help window, press <Enter> or <Esc>.

Sub-menu

Note that a right pointer symbol (as shown on t h e left) appears to the left of certain fields. This pointer indicates that you can display a sub-menu from this field. A sub-menu contains additional options for a field parameter. To display a sub-menu, move the highlight to the field and press <Enter>. The sub-menu appears. Use the legend keys to enter values and move from field to field within a sub-menu as you would within a menu. Use the <Esc> key to return to the main menu. Take some time to familiarize yourself with the legend keys and their corresponding functions. Practice navigating through the various menus and sub-menus. If you accidentally make unwanted changes to any of the fields, use the set default hot key <F5> to load the Setup default values. While moving around through the Setup program, note that explanations appear in the Item Specific Help window located to the right of each menu. This window displays the help text for the currently highlighted field.

2.2 Main Menu

When you enter the Setup program, the following screen appears.

System Time [XX:XX:XX]

Sets the system to the time that you specify (usually the current time). The format is hour, minute, second. Valid values for hour, minute and second are Hour: (00 to 23), Minute: (00 to 59), Second: (00 to 59). Use the <Tab> or <Shift> + <Tab> keys to move between the hour, minute, and second fields. 2-4 Chapter 2: BIOS Information

System Date [XX/XX/XXXX]

Sets the system to the date that you specify (usually the current date). The format is month, day, year. Valid values for month, day, and year are Month: (1 to 12), Day: (1 to 31), Year: (up to 2099). Use the <Tab> or <Shift> + <Tab> keys to move between the month, day, and year fields.
Legacy Diskette A, B [1.44M, 3.5 in.]
Sets the type of floppy drive installed. Configuration options: [None] [360K, 5.25 in.] [1.2M , 5.25 in.] [720K , 3.5 in.] [1.44M, 3.5 in.] [2.88M, 3.5 in.]
2.2.1 Primary and Secondary IDE Master/Slave

Type [Auto]

Select [Auto] to automatically detect an IDE hard disk drive. If automatic detection is successful, Setup automatically fills in the correct values for the remaining fields on this sub-menu. Configuration options: [Not Installed] [Auto] [CDROM] [ARMD]
Before attempting to configure a hard disk drive, make sure you have the correct configuration information supplied by the drive manufacturer.

LBA/Large Mode [Auto]

This field configures the LBA mode. Select [Auto] to enable LBA mode if the device supports it and the device is not already formatted with LBA Mode disabled. [Disable] disables the LBA mode.
Block (Multi-Sector Transfer) [Auto]
This field configures the Multi-Sector Transfer Block. Select [Auto] to enable the data to transfer from and to the device occurs multiple sectors at a time if the device supports it. When [Disabled], the data transfer from and to the device occurs one sector at a time.

PIO Mode [Auto]

This option lets you set a PIO (Programmed Input/Output) mode for the IDE device. Modes 0 through 4 provide successive increase in performance. Configuration options: [0] [1] [2] [3] [4]

DMA Mode [Auto]

This field enables you to select the DMA mode.

SMART Monitoring [Auto]

This field allows you to enable or disable the S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology) system that utilizes internal hard disk drive monitoring technology. This parameter is normally disabled because the resources used in the SMART monitoring feature may decrease system performance. Configuration options: [Disabled] [Enabled]
32Bit Data Transfer [Auto]
This field enables or disables the 32Bit data transfer mode.

2.2.2 System Information

This option displays detailed information about the BIOS, processor and system memory. The values for these fields are automatically detected. Refer to the screen capture below for details.

2.3 Advanced Menu

2.3.1 Chipset
Video Frame Buffer Size [Auto]
This field sets the size of the video frame buffer. The settings on this field is valid only for motherboard models with onboard VGA controller. Configuration options: [Auto] [8MB] [16MB] [32MB] [64MB] [128MB]

Graphics Aperture Size [Auto]
This feature allows you to select the size of mapped memory for AGP graphic data. Configuration options: [4MB] [8MB] [16MB] [32MB] [64MB] [128MB] [256MB] [512MB] [1024MB]
The [1024MB] and [512MB] configuration options are available only when you use AGP 8X graphics card.

MDA Access Control [PCI]

This field selects the MDA Access cycles direction. Configuration options: [AGP] [PCI]

Primary Video [PCI]

This will switch the PCI Bus scanning order while searching for a video card. This allows the user to select the type of Primary VGA in case of multiple video controllers. Configuration options: [PCI] [AGP/Onboard]
Onboard TV-out format [PAL]
This field sets the onboard TV-out format. Configuration options: [PAL] [NTSC]
2.3.2 Onboard Devices Configurations
Serial Port1, Port2 Address [3F8/IRQ4], [2F8/IRQ3]
This field allows you to set the address for the onboard serial connector. Configuration options: [3F8/IRQ4] [3E8/IRQ4] [2E8/IRQ3]
Serial Port1, Port2 Mode [Normal], [Normal]
This field allows you to set the serial port mode. Configuration options: [Normal] [IrDA] [ASK IR]

Parallel Port Mode [ECP]

This field allows you to set the operation mode of the parallel port. [Normal] allows normal-speed operation but in one direction only; [EPP] allows bidirectional parallel port operation; [ECP] allows the parallel port to operate in bidirectional DMA mode; [ECP+EPP] allows normal speed operation in a two-way mode. Configuration options: [Normal] [EPP] [ECP] [ECP+EPP]
ECP Mode DMA Channel [DMA3]
This field allows you to select the parallel port ECP DMA. Configuration options: [DMA0] [DMA1] [DMA3]

Parallel Port IRQ [IRQ7]

This field allows you to set the IRQ of the onboard parallel port connector. Configuration options: [IRQ5] [IRQ7]
SMBUS Interface [Enabled]
This field allows you to enable or disable the SMBus interface. Configuration options: [Disabled] [Enabled]
Modem CODEC Interface [Auto]
This field allows you to disable or set to automatic the modem CODEC interface. Configuration options: [Disabled] [Auto]
Audio CODEC Interface [Auto]

This field allows you to disable or set to automatic the internal audio CODEC interface. Configuration options: [Disabled] [Auto]

Onboard LAN [Enabled]

This field allows you to enable or disable the onboard LAN. Configuration options: [Disabled] [Enabled]
Onboard LAN Boot ROM [Disabled]
This field allows you to enable or disable the onboard LAN Boot ROM. Configuration options: [Disabled] [Enabled]

2.3.3 PCIPnP

Plug and Play O/S [No]
This field configures the Plug and Play O/S feature. If set to [No] the BIOS configures all the devices attached to the system. If set to [Yes], the operating system configures Plug and Play (PnP) devices not required for boot if the system has a Plug and Play operating system feature. Configuration options: [No] [Yes]

PCI Latency Timer [64]

Leave this field to the default setting [32] for best performance and stability. Configuration options: [32] [64] [96] [128] [160] [192] [224] [248]
Allocate IRQ to PCI VGA [Yes]
Select [Yes] to automatically assign IRQ to PCI VGA card if card requests IRQ. If set to [No], no IRQ is assigned even the card requests an IRQ.
Palette Snooping [Disabled]
This field enables or disables the Palette Snooping feature. Set to [Enabled] and the PCI devices will detect that an ISA graphics device is installed in the system so the device will function correctly. Configuration options: [Disabled] [Enabled]
PCI IDE BusMaster [Disabled]
This field allows the BIOS, when [Enabled], to use PCI busmastering for reading and writing to IDE drives. Configuration options: [Disabled] [Enabled]
Offboard PCI/ISA IDE Card [Auto]
This field allows the setting of the proper slot of installed PCI IDE cards. Some PCI IDE cards require this to be set to the PCI slot number that is holding the card. Configuration options: [Auto] [PCI Slot1] [PCI Slot2] [PCI Slot3] [PCI Slot4] [PCI Slot5] [PCI Slot6]
IRQ3, IRQ4, IRQ5, IRQ7, IRQ9, IRQ10, IRQ11, IRQ14, IRQ15 [Available]
This field specifies if the IRQ is reserved or available for use by Legacy ISA devices. Configuration options: [Available] [Reserved]
DMA Channel 0, 1, 3, 5, 6, 7 [Available]
This field specifies if the DMA Channel is reserved or available for use by Legacy ISA devices. Configuration options: [Available] [Reserved]

Reserved Memory Size [Disabled]
This field specifies the reserved memory block for use of legacy ISA devices. Configuration options: [Disabled] [16k] [32k] [64k]

2.4 Power Menu

The Power menu allows you to reduce power consumption. This feature turns off the video display and shuts down the hard disk after a period of inactivity.
Suspend Mode [S1 & S3 (STR)]
This field sets the ACPI state used for system suspend. Configuration options: [S1 (POS) only] [S1 & S3 (STR)]

ACPI 2.0 Support [No]

This field sets whether to enable RSDP pointers to 64-bit Fixed System Description Tables. Configuration options: [No] [Yes]

2.4.1 Hardware Monitor

MB Temperature [xxxC/xxxF] CPU Temperature [xxxC/xxxF]
The onboard hardware monitor automatically detects and displays the motherboard and CPU temperatures.
CPU Fan Speed [xxxxRPM] or [N/A] Chassis Fan Speed [xxxxRPM] or [N/A]
The onboard hardware monitor automatically detects and displays the CPU, chassis, and power fan speeds in rotations per minute (RPM). If any of the fans is not connected to the motherboard, that field shows 0RPM.
VCORE Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage
The onboard hardware monitor automatically detects the voltage output through the onboard voltage regulators.

2.4.2 Power Up Control

Restore on AC/Power Loss [Power Off]
This allows you to set whether or not to reboot the system after power interruptions. [Power Off] leaves your system off while [Power On] reboots the system. [Last State] sets the system back to the state it was before the power interruption. Configuration options: [Power Off] [Power On] [Last State]
Resume on Keyboard [Enabled]
This parameter allows you to use the keyboard keys to turn on the system. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]
Resume on PS/2 Mouse [Disabled]
This parameter allows you to use the PS/2 mouse to turn on the system. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]

PME Resume [Disabled]

This parameter enables or disables PME to generate a wake event. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]

RI Resume [Disabled]

This parameter enables or disables RI to generate a wake event. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]
Onboard LAN Resume [Disabled]
This parameter enables or disables the onboard LAN to generate a wake event. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]

RTC Resume [Disabled]

This parameter enables or disables RTC to generate a wake event. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]

2.5 Boot Menu

1st, 2nd, 3rd Boot Device
This field specifies the boot sequence from the available devices. Additional plug-in boot devices installed appear in sequence after the list of current boot devices. Configuration fields include FLOPPY DRIVE, IDE Hard Drive, ATAPI CD-ROM, and Other Boot Device.
2.5.1 Boot Settings Configuration

Quick Boot [Enabled]

This field allows BIOS to skip certain tests while booting. This will decrease the time needed to boot the system. Configuration options: [Disabled] [Enabled]

Quiet Boot [Disabled]

When [Enabled], the normal POST messages are displayed and displays only OEM Logo instead of POST messages. Configuration options: [Disabled] [Enabled]
AddOn ROM Display Mode [Force BIOS]
This field sets the display mode for option ROM. Configuration options: [Force BIOS] [Keep Current]

Bootup Num-Lock [On]

This field selects the power-on state for the NumLock key. Configuration options: [Off] [On]
PS/2 Mouse Support [Enabled]
This sets the PS/2 mouse support. Configuration options: [Disabled] [Enabled]

Typematic Rate [Fast]

This field configures the typematic rate of the keyboard. Configuration options: [Slow] [Fast]
System Keyboard [Present]
This allows you to enable or disable all the keyboards attached to the system. Configuration options: [Absent] [Present]

Parity Check [Disabled]

This field enables or disables the memory or parity error checking feature. Configuration options: [Disabled] [Enabled]

Boot to OS/2 [No]

This field sets compatibility mode to OS/2 operating system. Configuration options: [No] [Yes]
Wait for F1 If Error [Enabled]
This field sets whether to wait for F1 key to be pressed if an error occurs. Configuration options: [Disabled] [Enabled]
Hit Del Message Display [Disabled]
This field toggles the display of Press DEL to run Setup. Configuration options: [Disabled] [Enabled]
Interrupt 19 Capture [Disabled]
When [Enabled], it allows option ROMs to trap interrupt 19. This is required by some PCI cards that provide a ROM based setup utility. Configuration options: [Disabled] [Enabled]

2.5.2 Security

If you attempt to exit the Setup program without saving your changes, the program prompts you with a message asking if you want to save your changes before exiting. Pressing <Enter> saves the changes while exiting.

Exit Discarding Changes

Select this option only if you do not want to save the changes that you made to the Setup program. If you made changes to fields other than system date, system time, and password, the BIOS asks for a confirmation before exiting.

Discard Changes

This option allows you to discard the selections you made and restore the previously saved values. After selecting this option, a confirmation appears. Select [Yes] to discard any changes and load the previously saved values.

Load Setup Defaults

This option allows you to load the default values for each of the parameters on the Setup menus. When you select this option or if you press <F5>, a confirmation window appears. Select [Yes] to load default values. Select Exit Saving Changes or make other changes before saving the values to the non-volatile RAM.