P4S800-MX

User Guide

Motherboard

Checklist
Revised Edition V2 October 2003
Copyright 2003 ASUSTeK COMPUTER INC. All Rights Reserved. No part of this manual, including the products and software described in it, may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means, except documentation kept by the purchaser for backup purposes, without the express written permission of ASUSTeK COMPUTER INC. (ASUS). Product warranty or service will not be extended if: (1) the product is repaired, modified or altered, unless such repair, modification of alteration is authorized in writing by ASUS; or (2) the serial number of the product is defaced or missing. ASUS PROVIDES THIS MANUAL AS IS WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS, LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL OR PRODUCT. SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT. Products and corporate names appearing in this manual may or may not be registered trademarks or copyrights of their respective companies, and are used only for identification or explanation and to the owners benefit, without intent to infringe.

Contents

Notices.... v Safety information... vi P4S800-MX specification summary... vii About this guide... viii
Chapter 1: Product introduction
1.1 1.2 1.3 1.4 1.5 Welcome!... 1-2 Package contents... 1-2 Special features... 1-2 Before you proceed.. 1-5 Onboard LED... 1-5 Motherboard overview... 1-6 1.5.1 Motherboard layout.. 1-6 1.5.2 Placement direction.. 1-7 1.5.3 Screw holes... 1-7 Central Processing Unit (CPU).. 1-8 1.6.1 Overview... 1-8 1.6.2 Installing the CPU.. 1-9 System memory... 1-10 1.7.1 DIMM sockets location... 1-10 1.7.2 Memory configurations.. 1-10 1.7.3 Installing a DIMM..1-11 Expansion slots... 1-12 1.8.1 Installing an expansion card.. 1-12 1.8.2 Configuring an expansion card.. 1-12 1.8.3 PCI slots.. 1-14 1.8.4 AGP slot... 1-14 Jumpers... 1-15
1.10 Connectors... 1-17 1.10.1 Rear panel connectors... 1-17 1.10.2 Internal connectors... 1-18

Safeguards

Chapter 2: BIOS information
2.1 Managing and updating your BIOS. 2-2 2.1.1 Creating a bootable floppy disk.. 2-2 2.1.2 Using ASUS EZ Flash to update the BIOS. 2-3 2.1.3 Using the AFLASH utility.. 2-4 2.1.3 Recovering the BIOS with CrashFree BIOS.. 2-6 2.1.4 ASUS Update... 2-7 BIOS Setup program... 2-9 2.2.1 BIOS menu bar.. 2-9 2.2.2 Legend bar... 2-10 Main Menu...2-11 2.3.1 Primary and Secondary Master/Slave.. 2-13 2.3.2 Keyboard Features... 2-15 Advanced Menu... 2-16 2.4.1 Chip Configuration.. 2-18 2.4.2 I/O Device Configuration.. 2-20 2.4.3 PCI Configuration.. 2-21 Power Menu... 2-23 2.5.1 Power Up Control.. 2-24 2.5.2 Hardware Monitor.. 2-25 Boot Menu.. 2-26 Exit Menu... 2-28

2.6 2.7

Chapter 3: Software support
3.1 3.2 Install an operating system.. 3-2 Support CD information.. 3-2 3.2.1 Running the support CD.. 3-2 3.2.2 Drivers menu.. 3-3 3.2.3 Utilities menu.. 3-3 3.2.4 ASUS contact information.. 3-4

Notices

Federal Communications Commission Statement
This device complies with FCC Rules Part 15. Operation is subject to the following two conditions: This device may not cause harmful interference, and This device must accept any interference received including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with manufacturers instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment to an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help.

The SiS661FX chipset provides a high performance host interface for the Intel Pentium 4 processor, and supports AGP 8X, 800MHz front side bus, and DDR400. The SiS661FX features the SiS HyperStreaming Engine that smartly manages data streams between peripherals, core logic chipsets, front side bus, memory and graphic interfaces. This technology dramatically optimizes and improves the entire computer system performance. Providing I/O and peripheral support is the SiS963L southbridge. The southbridge is a subsystem that integrates various I/O functions including dual-channel ATA133 bus master IDE, USB 2.0/1.1, Ethernet, and audio controllers. The SiS963L provides LPC and AC97 interfaces, and complies with the Advanced Power Management (APM) 1.2 specification. The SiS963L interconnects with the northbridge at up to 1GB/s using the SiS proprietary MuTIOL bus interface.

DDR400 support

The motherboard supports up to 2GB of system memory using PC3200/2700/2100 non-ECC DDR DIMMs to deliver up to 3.2GB/s data transfer rate for the latest 3D graphics, multimedia, and Internet applications. See page 1-10.
Real256E integrated graphics
Embedded in the northbridge is the SiS Real256E integrated graphics with a 256-bit 3D engine and 2D graphics accelerator with a maximum 64MB shared display memory. The Real256E integrated graphics engine incorporates the UltraAGPII technology to provide a faster link between the built-in graphic engine and the northbridge memory controller. This technology boosts VGA throughput to up to 3.2GB/s to bring clearer and sharper images for your multimedia and graphic-intensive applications. The Real256E integrated graphics achieves a maximum resolution of 2048x1526 at 32bpp. See page 2-19.
Integrated 10/100 Mbps LAN controller
Onboard is a VIA 6103L LAN PHY that that interconnects with the SiS963L southbridge LAN controller to fully support 10BASE-T/ 100BASE-TX Ethernet networking. See page 1-17.
SoundMAX digital audio system
The SoundMax Digital Audio System is the industrys highest performance and most reliable audio solution for business professionals, audiophiles, musicians, and gamers. SoundMAX Digital Audio System can output 5.1 channel surround and features state-of-the-art DLS2 MIDI synthesizer with Yamaha DLSbyXG sound set, 5.1 Virtual Theater and supports all major game audio technologies including Microsoft DirectX8.0, Microsoft DirectSound 3D, A3D, MacroFX, ZoomFX, MultiDrive 5.1 and EAX. See page 1-17.
ASUS P4S800-MX motherboard user guide

USB 2.0 connectivity

The P4S800-MX rear panel is equipped with four (4) Universal Serial Bus (USB) ports to connect USB 2.0 devices. A USB header is also available at mid-board to accommodate a USB module for two (2) additional USB ports. The USB ports and header comply with USB 2.0 specification that supports up to 480 Mbps connection speed. This speed advantage over the conventional USB 1.1 (12 Mbps) allows faster Internet connection, interactive gaming, and simultaneous running of high-speed peripherals. USB 2.0 is backward compatible with USB 1.1. See pages 1-17 and 1-20.

PS/2KBMS T: Mouse B: Keyboard COM1

+5V (Default)

Socket 478

Super I/O

PARALLEL PORT
DDR DIMM1 (64 bit,184-pin module)
DDR DIMM2 (64 bit,184-pin module)

2Mb ISA

SEC_IDE1

FLOPPY1

PRI_IDE1

USBPW12 USBPW34

+5V (Default) +5VSB

ATX Power Connector

USB2.0 Top: T: USB3 RJ-45 B: USB4
Top:Line In Center:Line Out Below:Mic In

ATX12V1

661FX North Bridge

VIA VT6103

Accelerated Graphics Port (AGP1)
CR2032 3V Lithium Cell CMOS Power

USBPWR12 USBPWR34

USB1 USB2

CLRTC1

Clear CMOS Normal (Default)

AD1888 CODEC

PCI1 PCI2

SiS 963L Chipset

SPEAKER1 PLED1 F_PANEL1

FP_AUDIO1

CHA_FAN1 USBPW56 USB56

F_PANEL1

USBPW56

PLED+ NC PLED-

Power LED

ATX Power Switch*

IDE_LED
* Requires an ATX power supply.
IDE_LED+ IDE_LEDGround Reset

PLED+ PLEDPWR GND

Reset SW
1.5.2 Placement direction
When installing the motherboard, make sure that you place it into the chassis in the correct orientation. The edge with external ports goes to the rear part of the chassis as indicated in the image below.

1.5.3 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
Central Processing Unit (CPU)

1.6.1 Overview

The Intel Pentium 4 processor has a gold triangular mark on one corner. This mark indicates the processor Pin 1 that should match a specific corner of the CPU socket.

Gold Arrow

P4S800-MX Socket 478
Incorrect installation of the CPU into the socket may bend the pins and severely damage the CPU!
Notes on Intel Hyper-Threading Technology
1. Hyper-Threading Technology is supported under Windows XP and Linux 2.4.x (kernel) and later versions only. Under Linux, use the Hyper-Threading compliler to compile the code. If you are using any other operating systems, disable the Hyper-Threading Techonology item in BIOS to ensure system stability and performance. It is recommended that you install WinXP Service Pack 1. Make sure to enable the Hyper-Threading Technology item in BIOS before installing a supported operating system. For more information on Hyper-Threading Technology, visit www.intel.com/ info/hyperthreading.

2. 3. 4.

1.6.2 Installing the CPU
Follow these steps to install a CPU. 1. Locate the 478-pin ZIF socket on the motherboard. 2. Unlock the socket by pressing the lever sideways, then lift it up to a 90100 angle.
Socket Lever Make sure that the socket lever is lifted up to 90-100 angle, otherwise the CPU does not fit in completely.

90 - 100

3. Position the CPU above the socket such that its marked corner matches the base of the socket lever. 4. Carefully insert the CPU into the socket until it fits in place.
The CPU fits only in one correct orientation. DO NOT force the CPU into the socket to prevent bending the pins and damaging the CPU!

Gold Mark

5. When the CPU is in place, push down the socket lever to secure the CPU. The lever clicks on the side tab to indicate that it is locked. 6. Install a CPU heatsink and fan following the instructions that came with the heatsink package. 7. Connect the CPU fan cable to the CPU_FAN1 connector on the motherboard.

System memory

1.7.1 DIMM sockets location
The following figure illustrates the location of the DDR DIMM sockets.
P4S800-MX 184-Pin DDR DIMM Sockets
Make sure to unplug the power supply before adding or removing DIMMs or other system components. Failure to do so may cause severe damage to both the motherboard and the components. When installing long AGP cards, it is recommended to install the memory modules first. Long AGP cards, when installed, may interfere with the memory sockets.
1.7.2 Memory configurations
You may install 64MB, 128MB, 256MB, 512MB, and 1GB DDR DIMMs into the DIMM sockets.
Obtain DDR DIMMs only from ASUS qualified vendors. Refer to the Qualified DDR400 vendors list next page. Visit the ASUS website (www.asus.com) for the latest DDR Qualified Vendors List.

104 Pins

80 Pins
Table 1 Qualified DDR400 vendors list
This table lists the memory modules that have been tested and qualified for use with this motherboard.
Size 512MB 512MB 256MB 256MB 256MB 256MB 256MB 256MB 256MB 512MB Vendor MICRON CENTURY CENTURY BRAIN POWER Transcend Apacer ATP NANYA MICRON elixir Part Number MT16VDDT6464AG-40BC4 DXV2S8SSCCE3K27E DXV6S8MC5BC3U27E B6U808-256M-SAM-400 TS32MLD64V4F3 77.10636.465 AG32L64T8SQC4S NT256D64S88B1G-5T MT8VDDT3264AG-40BC4 M2U25664DS8HB3G-5T Chip Brand Side/s* MICRON SAMSUNG MICRON SAMSUNG MOSEL SAMSUNG SAMSUNG NANYA MICRON elixir DS DS SS SS SS SS SS SS SS DS Chip Number MT46V32M8TG-5BC K4H560838E-TCCC MT46V32M8TG-5BC K4H560838D-TCC4 V58C2256804SAT5 K4H560838D-TCC4 K4H560838D-TCC4 NT5DS32M8BT-5T MT46V32M8TG-5BC N2DS25680BT-5T

* Side/s: DS - Double-sided SS - Single-sided

1.7.3 Installing a DIMM

Follow these steps to install a DIMM. 1. Unlock a DIMM socket by pressing the retaining clips outward. 2. Align a DIMM on the socket such that the notch on the DIMM matches the break on the socket. 3. Firmly insert the DIMM into the socket until the retaining clips snap back in place and the DIMM is properly seated.

DDR DIMM notch

Unlocked Retaining Clip
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.

Expansion slots

Make sure to unplug the power cord before adding or removing expansion cards. Failure to do so may cause you physical injury and damage motherboard components.
In the future, you may need to install expansion cards. The following sub-sections describe the slots and the expansion cards that they support.
1.8.1 Installing an expansion card
Follow these steps to install an expansion card. 1. Before installing the expansion card, read the documentation that came with it and make the necessary hardware settings for the card. 2. Remove the system unit cover (if your motherboard is already installed in a chassis). 3. Remove the bracket opposite the slot that you intend to use. Keep the screw for later use. 4. Align the card connector with the slot and press firmly until the card is completely seated on the slot. 5. Secure the card to the chassis with the screw you removed earlier. 6. Replace the system cover.
1.8.2 Configuring an expansion card
After installing the expansion card, configure the it by adjusting the software settings. 1. Turn on the system and change the necessary BIOS settings, if any. See Chapter 2 for information on BIOS setup. 2. Assign an IRQ to the card. Refer to the tables on the next page. 3. Install the software drivers for the expansion card.
Standard interrupt assignments
IRQ Priority Standard Function System Timer Keyboard Controller 2 N/A Programmable Interrupt 3* 11 Communications Port (COM2) 4* 12 Communications Port (COM1) 5* 13 IRQ holder for PCI steering Floppy Disk Controller 7* 15 Printer Port (LPT1) System CMOS/Real Time Clock 9* 4 IRQ holder for PCI steering 10* 5 Advance AC97 CODEC 11* 6 Standard PCI Graphics Adapter (VGA) 12* 7 PS/2 Compatible Mouse Port Numeric Data Processor 14* 9 Primary IDE Channel 15* 10 Secondary IDE Channel These IRQs are usually available for ISA or PCI devices.
IRQ assignments for this motherboard

GAME1 P4S800-MX Game Connector
The GAME module is purchased separately.
+5V J1B1 J1CX GND GND J1CY J1B2 +5V
+5V J2B1 J2CX MIDI_OUT J2CY J2B2 MIDI_IN
11. Power LED Lead (3-1 pin PLED1) This 3-1 pin connector is for the system power LED. Connect the 3-pin power LED cable from the system chassis to this connector. The LED lights up when you turn on the system power, and blinks when the system is in sleep mode.
The power LED lead (PLED1) is present only on PCB versions 1.03 or later.

P4S800-MX PLED Setting

12. System panel connector (10-1 pin F_PANEL1) This connector accommodates several system front panel functions.
Power LED ATX Power Switch*
IDE_LED P4S800-MX Front Panel Audio Connector
Power LED Lead (2-pin PWR_LED) This 2-pin connector connects to the system power LED. The LED lights up when you turn on the system power, and blinks when the system is in sleep mode. If your motherboard package comes with a 2-pin to 3-pin power LED converter, connect the 2-pin plug to this connector, and the other end to the 3-pin power LED plug from the system chassis.
Power Switch / Soft-Off Switch Lead (2-pin PWR_BTN) 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.
IDE LED Lead (2-pin IDE_LED) This 2-pin connector supplies power to the hard disk drive activity LED. The read or write activities of any device connected to the primary or secondary IDE connector cause this LED to light up.
Reset Switch Lead (2-pin RESET) This 2-pin connector connects to the case-mounted reset switch for rebooting the system without turning off the system power.

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. ASUS EZ Flash (Updates the BIOS using a floppy disk during POST.) 2. ASUS AFLASH (Updates the BIOS using a bootable floppy disk in DOS mode.) 3. ASUS CrashFree BIOS (Updates the BIOS using a bootable floppy disk.) 4. ASUS Update (Updates the BIOS in Windows environment.) Refer to the corresponding section for details on these utilities.

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 ASUS Update or AFLASH utilities. 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. b. c. d. From your Windows desktop, click on Start, then select My Computer. Double-click on Add/Remove Programs icon from the Control Panel window. Click on the Startup Disk tab, then on Create Disk. button. Insert a 1.44 MB floppy disk when prompted. Follow the succeeding screen instructions to complete the process.
Windows XP environment Insert a 1.44 MB floppy disk into the floppy disk drive. From your Windows desktop, click on Start, then select My Computer. Select the 3 1/2 Floppy Drive icon. Click File from the menu, then select Format. A Format 3 1/2 Floppy Disk window appears. e. Select Create an MS-DOS startup disk from the format options field, then click Start. 2. Copy the original (or the latest) motherboard BIOS to the bootable floppy disk. a. b. c. d.
2.1.2 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 floppy disk and using a DOS-based utility. The EZ Flash is built-in the BIOS LPC chip 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 and rename it to P4S800MX.BIN. 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 P4S800MX.BIN not found!
4. Insert the floppy disk that contains the BIOS file. If the P4S800MX.BIN file is 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!
User recovery requested. Starting BIOS recovery. Checking for floppy. Floppy found! Reading file P4S800MX.BIN. Completed. Start flashing. Flashed successfully. Rebooting.
2.1.3 Using the AFLASH utility
AFLASH is a Flash Memory Writer utility that allows you to update the BIOS using a bootable floppy disk, or copy the original motherboard BIOS. This utility only works in DOS mode.
Copying the original motherboard BIOS
To copy the original motherboard BIOS file: 1. Copy the AFLASH utility from the support CD to the boot disk you created.

AFLASH does not work in the DOS prompt within Windows, and does not work with certain memory drivers that may be loaded when you boot from the hard drive. It is recommended that you reboot using a floppy disk.
2. Reboot the computer from the floppy disk.
BIOS setup must specify Floppy as the first item in the boot sequence.
3. In DOS prompt, type AFLASH, then press <Enter> to run AFLASH. 4. Select 1. Save Current BIOS to File, then press <Enter>. The Save Current BIOS To File screen appears.
If the word unknown appears after Flash Memory, the memory chip is either not programmable or is not supported by the ACPI BIOS and therefore, cannot be programmed by the Flash Memory Writer utility.
5. Type a filename and the path, for example, A:\XXX-XX.XXX, then press <Enter>.

Updating the BIOS

Update the BIOS only if you have problems with the motherboard and you are sure that the new BIOS revision will solve your problems. Careless updating may result to more problems with the motherboard!
To update the BIOS: 1. Download an updated BIOS file from the ASUS website (www.asus.com) and save the file to the bootable floppy disk you earlier. 2. Reboot the computer from the floppy disk. 3. In DOS prompt, type AFLASH, then press <Enter> to run AFLASH. 4. Select 2. Update BIOS including Boot Block and ESCD, then press <Enter>. The Update BIOS Including Boot Block and ESCD screen appears. 5. Type the filename of your new BIOS and the path, for example, A:\P4S800MX.BIN, then press <Enter>. To cancel this operation, press <Enter>. 6. When prompted, press Y to start the update.
7. The utility starts updating the BIOS. The boot block is automatically updated only when necessary. This minimizes the possibility of boot problems in case of update failures. When updating is done, the message Flashed Successfully appears.
8. Follow the screen instructions to continue.
If you encounter problems while updating the new BIOS, DO NOT turn off the system because this may cause boot problems. Just repeat the process, and if the problem persists, load the original BIOS file you saved to the boot disk. If the Flash Memory Writer utility is not able to successfully update a complete BIOS file, the system may not boot. If this happens, call the ASUS Technical Support for assistance.

4. From the FTP site, select the BIOS version that you wish to download. Click Next. 5. Follow the instructions on the succeeding screens to complete the update process.
If you selected the option to update the BIOS from a file, a window pops up prompting you to locate the file. Select the file, click Save, then follow the screen instructions to complete the update process.

BIOS Setup program

This motherboard supports a programmable Flash EEPROM that you can update using the provided utility described in section 2.1 Managing and updating your BIOS. 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 Flash ROM. The Flash ROM 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. If you wish to enter Setup after POST, restart the system by pressing <Ctrl> + <Alt> + <Delete>, or by pressing the reset button on the system chassis. You can also restart by turning the system off and then back on. Do this last option only if the first two failed. 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.

2.2.1 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.

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.

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 [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.]
Floppy 3 Mode Support [Disabled]
This is required to support older Japanese floppy drives. The Floppy 3 Mode feature allows reading and writing of 1.2MB (as opposed to 1.44MB) on a 3.5-inch diskette. Configuration options: [Disabled] [Enabled]
Supervisor Password [Disabled] / User Password [Disabled]
These fields allow you to set passwords. To set a password, highlight the appropriate field and press <Enter>. Type in a password then press <Enter>. You can type up to eight alphanumeric characters. Symbols and other characters are ignored. To confirm the password, type the password again and press <Enter>. The password is now set to [Enabled]. This password allows full access to the BIOS Setup menus. To clear the password, highlight this field and press <Enter>. The same dialog box as above appears. Press <Enter>. The password is set to [Disabled]. A note about passwords The BIOS Setup program allows you to specify passwords in the Main menu. The passwords control access to the BIOS during system startup. Passwords are not case sensitive, meaning, passwords typed in either uppercase or lowercase letters are accepted. The BIOS Setup program allows you to specify two different passwords: a Supervisor password and a User password. If you did not set a Supervisor password, anyone can access the BIOS Setup program. If you did, the Supervisor password is required to enter the BIOS Setup program and to gain full access to the configuration fields. Forgot the password? If you forget your password, you can clear it by erasing the CMOS Real Time Clock (RTC) RAM. The RAM data containing the password information is powered by the onboard button cell battery. If you need to erase the CMOS RAM, unplug the all the power cables and remove the button cell battery. Reinstall the battery after about 2 seconds, then power up the system. Refer to section 1.9 Clear RTC RAM on how to clear the RTC RAM.

Cylinders

This field configures the number of cylinders. Refer to the drive documentation to determine the correct value. To make changes to this field, set the Type field to [User Type HDD] and the Translation Method field to [Manual].
This field configures the number of read/write heads. Refer to the drive documentation to determine the correct value. To make changes to this field, set the Type field to [User Type HDD] and the Translation Method field to [Manual].

Sector

This field configures the number of sectors per track. Refer to the drive documentation to determine the correct value. To make changes to this field, set the Type field to [User Type HDD] and the Translation Method field to [Manual].

CHS Capacity

This field shows the drives maximum CHS capacity as calculated by the BIOS based on the drive information you entered.

Maximum LBA Capacity

This field shows the drives maximum LBA capacity as calculated by the BIOS based on the drive information you entered.
Multi-Sector Transfers [Maximum]
This option automatically sets the number of sectors per block to the highest number that the drive supports. Note that when this field is automatically configured, the set value may not always be the fastest value for the drive. You may also manually configure this field. Refer to the documentation that came with the hard drive to determine the optimum value and set it manually. To make changes to this field, set the Type field to [User Type HDD]. Configuration options: [Disabled] [2 Sectors] [4 Sectors] [8 Sectors] [16 Sectors] [32 Sectors] [Maximum]
SMART Monitoring [Disabled]
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]

PIO Mode [4]

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]
Ultra DMA Mode [Disabled]
Ultra DMA capability allows improved transfer speeds and data integrity for compatible IDE devices. Set to [Disabled] to suppress Ultra DMA capability. To make changes to this field, set the Type field to [User Type HDD]. Configuration options: [0] [1] [2] [3] [4] [5] [6] [Disabled]

2.3.2 Keyboard Features

Boot Up NumLock Status [On]
This field enables users to activate the Number Lock function upon system boot. Configuration options: [Off] [On]
Keyboard Auto-Repeat Rate [6/Sec]
This controls the speed at which the system registers repeated keystrokes. Options range from 6 to 30 characters per second. Configuration options: [6/Sec] [8/Sec] [10/Sec] [12/Sec] [15/Sec] [20/Sec] [24/Sec] [30/Sec]

USB Legacy Support [Auto]
This motherboard supports Universal Serial Bus (USB) devices. The default of [Auto] allows the system to detect a USB device at startup. If detected, the USB controller legacy mode is enabled. If not detected, the USB controller legacy mode is disabled. When you set this field to [Disabled], the USB controller legacy mode is disabled whether or not you are using a USB device. Configuration options: [Disabled] [Enabled] [Auto]
OS/2 Onboard Memory > 64M [Disabled]
When using OS/2 operating systems with installed DRAM of greater than 64MB, you need to set this option to [Enabled]. Otherwise, leave to the default setting [Disabled]. Configuration options: [Disabled] [Enabled]

2.4.1 Chip Configuration

SDRAM Configuration [By SPD]
This parameter allows you to set the optimal timings for items 25, depending on the memory modules that you are using. The default setting is [By SPD], which configures items 25 by reading the contents in the SPD (Serial Presence Detect) device. The EEPROM on the memory module stores critical information about the module, such as memory type, size, speed, voltage interface, and module banks. Configuration options: [User Defined] [By SPD]
The SDRAM parameters (items 2~5) become configurable only when you set the SDRAM Configuration to [User Defined].
SDRAM CAS Latency (value depends on SDRAM SPD)
This item controls the latency between the SDRAM read command and the time the data actually becomes available. Configuration options: [2.5T] [2T] [1.5T] [3T]
SDRAM RAS to CAS Delay (value depends on SDRAM SPD)
This item controls the latency between the DDR SDRAM active command and the read/write command. Configuration options: [3T] [2T] [4T]
SDRAM RAS Precharge Time (value depends on SDRAM SPD)
This item controls the idle clocks after issuing a precharge command to the DDR SDRAM. Configuration options: [3T] [2T] [4T]
SDRAM Active Precharge Delay (value depends on SDRAM SPD)
This item controls the number of DDR SDRAM clocks used for DDR SDRAM parameters. Configuration options: [6T] [7T] [5T] [9T]
Chipset Clock Mode [Synchronous]
When set to [Synchronous], AGP/PCI frequency is coordinated with the CPU frequency. When set to [Asynchronous], AGP/PCI frequency is not adjusted according to the CPU frequency. Configuration options: [Synchronous] [Asynchronous]
SDRAM Command Lead-off Time [Auto]
Configuration options: [Auto] [2T] [1T]
Graphics Aperture Size [64MB]
This feature allows you to select the size of mapped memory for AGP graphic data. Configuration options: [4MB] [8MB] [16MB] [32MB] [64MB] [128MB] [256MB]

AGP 3.0 Capability [8X Mode]
This motherboard supports the AGP 8X interface that transfers video data at 2.12GB/s. The configuration options vary depending on the speed of AGP card installed. If an AGP 4X card is installed, configuration options will be [4X Mode]. The setting [8X Mode] will be the default if an AGP 8X card is installed. AGP 8X is backward-compatible so you may keep the [4X Mode] setting, however the AGP interface will only provide a peak data throughput of 1066MB/s even if you are using an AGP 8X card. Configuration options: [8X Mode] [4X Mode]
AGP Fast Write Capability [Enabled]
This field enables or disables the AGP 4x Fast Write Capability feature. Configuration options: [Enabled] [Disabled]
Video Memory Cache Mode [UC]
USWC (uncacheable, speculative write combining) is a new cache technology for the video memory of the processor. It can greatly improve the display speed by caching the display data. You must set this to UC (uncacheable) if your display card does not support this feature, otherwise the system may not boot. Configuration options: [UC] [USWC]

Onboard VGA [Enabled]

This item allows you to enable or disable the onboard VGA controller. Configuration options: [Enabled] [Disabled]
Onboard VGA Shared Memory Size [32M]
This field allows you to set the onboard VGA memory size with the currently installed system memory. Configuration options: [32M] [64M]
Delay Transaction [Enabled]
This field enables or disables the PCI delay transaction function. Configuration options: [Enabled] [Disabled]

Onboard PCI IDE [Both]

This field allows you to enable either the primary IDE channel or secondary IDE channel, or both. You can also set both channels to [Disabled]. Configuration options: [Both] [Primary] [Secondary] [Disabled]
IDE Bus Master Support [Enabled]
This item controls the IDE Bus Master support for non-Windows operating systems. Configuration options: [Enabled] [Disabled]
2.4.2 I/O Device Configuration
Floppy Disk Access Control [R/W]
When set to [Read Only], this parameter protects files from being copied to floppy disks by allowing reads from, but not writes to, the floppy disk drive. The default setting [R/W] allows both reads and writes. Configuration options: [R/W] [Read Only]
Onboard Serial Port 1 [3F8H/IRQ4]
This field allows you to set the addresses for the onboard serial connector. Configuration options: [3F8H/IRQ4] [2F8H/IRQ3] [3E8H/IRQ4] [2E8H/IRQ10] [Disabled]

The use of shielded cables for connection of the monitor to the graphics card is required to assure compliance with FCC regulations. Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the users authority to operate this equipment.
Canadian Department of Communications Statement
This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications. This class B digital apparatus complies with Canadian ICES-003.

Safety information

Electrical safety
To prevent electrical shock hazard, disconnect the power cable from the electrical outlet before relocating the system. When adding or removing devices to or from the system, ensure that the power cables for the devices are unplugged before the signal cables are connected. If possible, disconnect all power cables from the existing system before you add a device. Before connecting or removing signal cables from the motherboard, ensure that all power cables are unplugged. Seek professional assistance before using an adpater or extension cord. These devices could interrupt the grounding circuit. Make sure that your power supply is set to the correct voltage in your area. If you are not sure about the voltage of the electrical outlet you are using, contact your local power company. If the power supply is broken, do not try to fix it by yourself. Contact a qualified service technician or your retailer.

Operation safety

Before installing the motherboard and adding devices on it, carefully read all the manuals that came with the package. Before using the product, make sure all cables are correctly connected and the power cables are not damaged. If you detect any damage, contact your dealer immediately. To avoid short circuits, keep paper clips, screws, and staples away from connectors, slots, sockets and circuitry. Avoid dust, humidity, and temperature extremes. Do not place the product in any area where it may become wet. Place the product on a stable surface. If you encounter technical problems with the product, contact a qualified service technician or your retailer.

Chipset Front Side Bus (FSB) Memory

Expansion slots

IDE Audio LAN USB 2.0 Special Features

Overclocking Features

Rear panel I/O
Internal I/O 1 x USB 2.0 connector for 2 additional USB ports CPU/Chassis fan connectors 20-pin/4-pin ATX 12V power connectors Chassis intrusion GAME/MIDI connector CD/AUX audio connectors Front panel audio connector S/PDIF out connector 2Mb Flash ROM, ASUS JumperFree,Award BIOS, TCAV, PnP, DMI2.0, WfM2.0, SM BIOS2.3, ASUS EZ Flash, ASUS CrashFree BIOS 2, ASUS C.P.R. PCI 2.2, USB 2.0 WfM 2.0, DMI 2.0, WOL/WOR by PME, Chassis intrusion, SM bus ATX form factor: 12 in x 9.6 in Users Guide UltraDMA cable FDD cable I/O shield Device drivers ASUS PC Probe ASUS LiveUpdate Utility Anti-virus utility

BIOS features

Industry standard Manageability Form Factor Accessories

Support CD contents

* Specifications are subject to change without notice.

Chapter 1

This chapter describes the features of the P4S800 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 P4S800 motherboard! The ASUS P4S800 motherboard delivers a host of new features and latest technologies making it another standout in the long line of ASUS quality motherboards! The motherboard incorporates the Intel Pentium 4 or Celeron Processor in a 478-pin package with Intel Hyper-Threading Technology support coupled with the SiS 648FX chipset with Front Side Bus 800 (FSB800) support and the unique MuTIOL technology to set a new benchmark for a cost-effective desktop platform solution. Supporting up to 3GB of system memory with the PC3200/2700/2100/1600 DDR DIMMs, high-resolution graphics via an AGP 8X slot, USB 2.0 and 6-channel audio features, the P4S800 is your affordable vehicle to enter the world of computing! Before you start installing the motherboard and hardware devices on it, check the items in your package with the list below.

Package contents

ASUS P4S800 motherboard ATX form factor: 12 in x 9.6 in (30.5 cm x 24.5 cm) ASUS P4S800 series support CD 80-conductor UltraDMA/66/100/133 IDE cable Ribbon cable for a 3.5-inch floppy drive I/O shield Bag of extra jumper caps User Guide

The following table lists the memory modules that have been tested and qualified for use with this motherboard.
Qualified DDR 400 memory modules:
Vendor ADATA /S ADATA /S ADATA /S ADATA /S Apacer /S Apacer /D Apacer /S Apacer /D ATP /S ATP /D Geil /S Geil /D Hynix /S Hynix /D Infineon /S Infineon /S Infineon /D Kingston /S Kingston /S Kingston /D Micron /S Micron /D PSC /D SAMSUNG /S SAMSUNG /D Transcend /S Transcend /D TwinMOS /S TwinMOS /D TwinMOS /S TwinMOS /D Winbond /D Part Number MDOMO5F3G31-JB1EAZ MDOADHF3G31-JB1FC2 MDOSS6F3G31JB1EAE MDOWB5F3G316B1EAE 77.10636.465 77.10736.464 77.10639.535 77.10739.534 AG32L64T8SQC4S AG64L64T8SQC4S MAG32UL6464D2TG5A-KC MAG16UL3264D1TG5A-KC HYMD232646B8J-D43 AA HYMD232646B8J-D43 AA HYS64D16301GU-5-B HYS64D32300GU-5-B HYS64D64320GU-5-B KVR400X64C25/256 KVR400X64C3/256 KVR400X64C3/512 MT8VDDT3264AG-40BC4 MT16VDDT6464AG-40BC4 AL6D8A53T1-5B M368L3223ETM-CCC M368L6432ETM-CCC TS32MLD64V4F3 TS64MLD64V4F3 M2G9I08AFATT9F081AA4T M2G9J16AGATT9F081AA4T M2S9I08AFAPS9F0811A-T M2G9J16AGATT9F081AA4T W9451GCDB-5 Chip Vendor Mosel ADATA Samsung Winbond Samsung Samsung PSC PSC Samsung Samsung Geil Geil Hynix Hynix Infineon Infineon Infineon Winbond Samsung Samsung Micron Micron PSC Samsung Samsung Mosel Mosel TwinMOS TwinMOS PSC TwinMOS Winbond

/D - Double Sided DIMMs

Chip Part Number V58C2256804SAT5 ADD8608A8A-4.5B K4H560838D-TCC4 W942508BH-5 K4H560838D-TCCC K4H560838D-TCCC A2S56D30ATP A2S56D30ATP K4H560838D-TCC4 K4H560838D-TCC4 GL3LC32G88TG-5A GL3LC32G88TG-5A HY5DU56822BT-D43 HY5DU56822BT-D43 HYB25D256160BT-5B HYB25D256800BT-5B HYB25D256800BT-5B W942508BH-5 K4H560838D-TCC4 K4H560838D-TCC4 MT46V32M8TG-5BC MT46V32M8TG-5BC A2S56D30ATP K4H560838E-TCCC K4H560838E-TCCC V58C2256804SAT5 V58C2256804SAT5 TMD7608F8FE50D TMD7608F8FE50D A2S56D30ATP TMD7608F8E50D W942508CH-5
Size 256MB 256MB 256MB 256MB 256MB 512MB 256MB 512MB 256MB 512MB 256MB 512MB 256MB 512MB 128MB 256MB 512MB 256MB 256MB 512MB 256MB 512MB 512MB 256MB 512MB 256MB 512MB 256MB 512MB 256MB 512MB 512MB
LEGEND: /S - Single Sided DIMMs
Qualified DDR 333 memory modules:
Vendor Apacer /S Hynix /D Kingston /S Kingston /D Mosel /D Nanya /D PQI /S Samsung /S Samsung /D TwinMOS /S TwinMOS /D Winbond /D
Part Number 77.10328.462 HYMD132645B8J-JAA KVR333X64C25/256 KVR333X64C25/512 MPMC225-383 NT256D64S8HA0G-6 MD3456UPS M368L3223KTL-CB3 M368L6423ETN-CB3 M2G5I08AIATT5F081AA4T M2G5J16AJATT5F081AA4T
Chip Vendor Samsung Hynix Mosel Mosel Mosel Nanya PQI Samsung Samsung TwinMOS TwinMOS Winbond

NOTE: Orient the red markings on the floppy ribbon cable to PIN 1.
P4S800 Floppy Disk Drive Connector
2. IDE connectors (40-1 pin PRI_IDE, SEC_IDE) This connector supports the provided UltraDMA133/100/66 IDE hard disk ribbon cable. Connect the cables blue connector to the primary (recommended) or secondary IDE connector, then connect the gray connector to the UltraDMA133/100/66 slave device (hard disk drive) and the black connector to the UltraDMA133/100/66 master device. It is recommended that you connect non-UltraDMA133/100/66 devices to the secondary IDE connector. If you install two hard disks, you must configure the second drive as a slave device by setting its jumper accordingly. Refer to the hard disk documentation for the jumper settings. BIOS supports specific device bootup. If you have more than two UltraDMA133/100/66 devices, purchase another UltraDMA133/100/66 cable. You may configure two hard disks to be both master devices with two ribbon cables one for the primary IDE connector and another for the secondary IDE connector.
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.

P4S800 IDE Connectors

NOTE: Orient the red markings (usually zigzag) on the IDE ribbon cable to PIN 1.
3. ATX power connectors (20-pin ATXPWR, 4-pin ATX12V) These connectors connect to an ATX 12V 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 firmly until the connectors completely fit. In addition to the 20-pin ATXPWR connector, this motherboard requires that you connect the 4-pin ATX +12V power plug to provide sufficient power to the CPU.
Make sure that your 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.

AGND +5VA BLINE_OUT_R

FP_AUDIO
MIC2 MICPWR Line out_R NC Line out_L
P4S800 Front Panel Audio Connector
9. WiFi connector (63-pin WIFI) This slot supports the ASUS proprietary WiFi (Wireless Fidelity) module.

BLINE_OUT_L

P4S800 Wi-Fi Slot
10. USB header (10-1 pin USB56) If the USB ports on the rear panel are inadequate, a USB header is available for additional USB ports. The USB header complies with USB 2.0 specification that supports up to 480 Mbps connection speed. This speed advantage over the conventional 12 Mbps on USB 1.1 allows faster Internet connection, interactive gaming, and simultaneous running of high-speed peripherals. You may connect an optional USB 2.0/GAME module, connect the USB cable to this header. The module has two USB 2.0 ports that support the next generation USB peripherals such as high resolution cameras, scanners, and printers.
USB+5V USB_P6USB_P6+ GND OC#
USB56 P4S800 USB 2.0 Header

USB+5V USB_P5USB_P5+ GND

Do not connect OC# to GND, the system may become unstable.
11. Digital audio connector (4-1 pin SPDIF_OUT) This connector is for a S/PDIF audio module that allows digital instead of analog sound output. If the S/PDIF out port at the rear panel is inadequate use this to connect one end of the audio cable to the S/PDIF_OUT connector on the motherboard, and the other end to the S/PDIF module.

SPDIF_OUT

SPDIFOUT GND
P4S800 Digital Audio Connector The S/PDIF module is purchased separately.
12. System panel connector (20-pin PANEL) This connector accommodates several system front panel functions.

Power LED

PLED+ PLED-

Speaker Connector

+5V Ground Ground Speaker ExtSMI# Ground PWR Ground

IDE_LED+ IDE_LED-

Reset SW ATX Power Switch*

IDE_LED

SMI Lead
* Requires an ATX power supply.
P4S800 System Panel Connectors
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, and blinks when the system is in sleep mode.
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 allows you to manually place the system into a suspend mode, or green mode, where system activity is instantly decreased to save power and to expand the life of certain system components. Attach the casemounted suspend switch to this 2-pin connector.

6. Type a filename and path, for example, A:\XXX-XX.XXX, then press [Enter].

Updating the BIOS

Update the BIOS only if you have problems with the motherboard and you are sure that the new BIOS 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 or FTP) (see ASUS CONTACT INFORMATION on page viii for details) and save to the boot floppy disk you created earlier. 2. Boot from the floppy disk. 3. At the A:\ prompt, type AFLASH and then press <Enter>. 4. At the Main Menu, type 2 then press <Enter>. The Update BIOS Including Boot Block and ESCD screen appears. 5. Type the filename of your new BIOS and the path, for example, A:\XXXXX.XXX, then press <Enter>. To cancel this operation, press <Enter>.
6. When prompted to confirm the BIOS update, press Y to start the update.
7. The utility starts to program the new BIOS information into the Flash ROM. The boot block is updated automatically only when necessary. This minimizes the possibility of boot problems in case of update failures. When the programming is done, the message Flashed Successfully appears.
8. Follow the onscreen instructions to continue.
If you encounter problems while updating the new BIOS, DO NOT turn off the system because this may cause boot problems. Just repeat the process, and if the problem persists, load the original BIOS file you saved to the boot disk. If the Flash Memory Writer utility is not able to successfully update a complete BIOS file, the system may not boot. If this happens, call the ASUS service center for support.
2.1.3 CrashFree BIOS 2 (BIOS Auto-recovery Procedure)
The CrashFree BIOS 2 feature allows users to boot the computer from a floppy disk and update the BIOS using AFLASH.EXE or EZ Flash Utility in case the original BIOS fails or gets corrupted. If the user doesnt have a bootable floppy disk with the original BIOS, an auto-recovery procedure can be performed using the support CD. It is strongly recommended to save a copy of the motherboards original BIOS along with the AFLASH.EXE utility to a bootable disk.(See section 2.1.2 to create a bootable floppy disk)

Using the support CD

1. Boot using the support CD. The support CD will automatically detect whether the BIOS is corrupted. 2. If the BIOS data or codes are corrupted, the message The BIOS was corrupted! Do you want to recover?, appears. 3. Press Y, to start auto-recovery procedure. If there is no keyboard input from user, the system will perform BIOS auto recovery after 30 seconds.
The recovered BIOS may not have the same version as original BIOS. Visit ASUS website (www.asus.com) to download the latest BIOS for this motherboard and update BIOS using ASUS AFLASH.EXE, ASUS EZ Flash Utility or ASUS Live Update.
Using the created bootable floppy disk
1. Boot using the bootable floppy disk. 2. Execute AFLASH.EXE utility (Refer to section 2.1.2 Using AFLASH to update BIOS for detailed procedures) 3. If the BIOS image is newer than the current BIOS or if the BIOS is corrupted, the confirmation message Are you sure? (Y/N), appears. 4. Press Y to update the BIOS.

BIOS Setup program

This motherboard supports a programmable Flash ROM that you can update using the provided utility described in section 2.1 Managing and updating your BIOS. 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 Flash ROM. The Flash ROM 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. If you wish to enter Setup after POST, restart the system by pressing <Ctrl> + <Alt> + <Delete>, or by pressing the reset button on the system chassis. You can also restart by turning the system off and then back on. Do this last option only if the first two failed. 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.

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. If automatic detection fails, this may be because the hard disk drive is too old or too new. If the hard disk was already formatted on an older system, Setup may detect incorrect parameters. In these cases, select [User Type HDD] to manually enter the IDE hard disk drive parameters. Refer to the next section for details.
Before attempting to configure a hard disk drive, make sure you have the correct configuration information supplied by the drive manufacturer. Incorrect settings may cause the system to fail to recognize the installed hard disk.

[User Type HDD]

Manually enter the number of cylinders, heads and sectors per track for the drive. Refer to the drive documentation or on the drive label for this information.
After entering the IDE hard disk drive information into BIOS, use a disk utility, such as FDISK, to partition and format new IDE hard disk drives. This is necessary so that you can write or read data from the hard disk. Make sure to set the partition of the Primary IDE hard disk drives to active.
If no drive is installed or if you are removing a drive and not replacing it, select [None]. Other options for the Type field are:
[CD-ROM] - for IDE CD-ROM drives [LS-120] - for LS-120 compatible floppy disk drives [ZIP] - for ZIP-compatible disk drives [MO] - for IDE magneto optical disk drives [Other ATAPI Device] - for IDE devices not listed here
After making your selections on this sub-menu, press the <Esc> key to return to the Main menu. When the Main menu appears, the hard disk drive field displays the size for the hard disk drive that you configured.

Translation Method [LBA]

Select the hard disk drive type in this field. When Logical Block Addressing (LBA) is enabled, the 28-bit addressing of the hard drive is used without regard for cylinders, heads, or sectors. Note that LBA Mode is necessary for drives with more than 504MB storage capacity. Configuration options: [LBA] [LARGE] [Normal] [Match Partition Table] [Manual]

Cylinders

This field configures the number of cylinders. Refer to the drive documentation to determine the correct value. To make changes to this field, set the Type field to [User Type HDD] and the Translation Method field to [Manual].

Keyboard Auto-Repeat Rate [12/Sec]
This controls the speed at which the system registers repeated keystrokes. Options range from 6 to 30 characters per second. Configuration options: [6/Sec] [8/Sec] [10/Sec] [12/Sec] [15/Sec] [20/Sec] [24/Sec] [30/Sec]
Keyboard Auto-Repeat Delay [1/4 Sec]
This field sets the time interval for displaying the first and second characters. Configuration options: [1/4 Sec] [1/2 Sec] [3/4 Sec] [1 Sec]

Advanced Menu

CPU Speed [Manual]
When the motherboard is set to JumperFree mode, this field allows you to select the internal frequency of the CPU. Select [Manual] if you want to make changes to the two subsequent fields. Note that selecting a frequency higher than the CPU manufacturer recommends may cause the system to hang or crash.
CPU Frequency Multiple (when CPU Speed is set to [Manual])
This field sets the frequency multiple between the CPUs internal frequency (CPU speed) and external frequency. Set this field in conjunction with CPU Frequency (MHz) to match the speed of the CPU.
CPU External Frequency (MHz) (when CPU Speed is set to [Manual])
This feature tells the clock generator what frequency to send to the system bus and PCI bus. The bus frequency (external frequency) multiplied by the bus multiple equals the CPU speed.

Memory Frequency [Auto]

This field determines whether the memory clock frequency is set to be in synchronous or asynchronous mode with respect to the system frequency. The options that appear in the popup menu vary according to the CPU Frequency [MHz]. Configuration options: [Auto] [200MHz] [266MHz] [333MHz] [400MHz]

CPU VCore Setting [Auto]

The [Manual] setting allows you to manually select the core voltage supplied to the CPU (see next item). However, it is recommended that you keep the default setting [Auto] to allow the system to automatically determine the appropriate CPU core voltage. Configuration options: [Auto] [Manual]

CPU VCore [1.xxxV]

When the CPU VCore Setting parameter above is set to [Manual], the CPU VCore item allows you to select a specific CPU core voltage. This field is not accessible when the CPU VCore Setting is set to [Auto].

This field determines when to activate the video off feature for monitor power management. Configuration options: [Always On] [Suspend -> Off]
Video Off Method [DPMS OFF]
This field defines the video off features. The Display Power Management System (DPMS) feature allows the BIOS to control the video display card if it supports the DPMS feature. [Blank Screen] only blanks the screen. Use this for monitors without power management or green features. [V/H SYNC+Blank] blanks the screen and turns off vertical and horizontal scanning. Configuration options: [Blank Screen] [V/H SYNC+Blank] [DPMS Standby] [DPMS Suspend] [DPMS OFF] [DPMS Reduce ON]
HDD Power Down [Disabled]
Shuts down any IDE hard disk drives in the system after a period of inactivity as set in this user-configurable field. This feature does not affect SCSI hard drives. Configuration options: [Disabled] [1 Min] [2 Min] [3 Min].[15 Min]
ACPI Suspend To RAM [Disabled]
This field allows you to enable or disable the ACPI Suspend-to-RAM feature. To support this feature, the +5VSB of the power supply should have the capacity to provide more than 720mA current. Configuration options: [Disabled] [Enabled]

Suspend Mode [Disabled]

Sets the time period before the system goes into suspend mode. Configuration options: [Disabled] [1~2 Min] [2~3 Min] [4~5 Min] [8~9 Min] [20 Min] [30 Min]
PWR Button <4 Secs [Soft Off]
When set to [Soft off], the ATX switch can be used as a normal system power-off button when pressed for less than 4 seconds. [Suspend] allows the button to have a dual function where pressing less than 4 seconds puts the system in sleep mode. Regardless of the setting, holding the ATX switch for more than 4 seconds powers off the system. Configuration options: [Soft off] [Suspend]

2.5.1 Power Up Control

AC Power Loss Restart [Disabled]
This allows you to set whether or not to reboot the system after power interruptions. [Disabled] leaves your system off while [Enabled] reboots the system. [Previous State] sets the system back to the state it was before the power interruption. Configuration options: [Disabled] [Enabled] [Previous State]

Wake/Power Up On Ext. Modem [Disabled]
This allows either settings of [Enabled] or [Disabled] for powering up the computer when the external modem receives a call while the computer is in Soft-off mode. Configuration options: [Disabl ed] [Enabled]
The computer cannot receive or transmit data until the computer and applications are fully running. Thus, connection cannot be made on the first try. Turning an external modem off and then back on while the computer is off causes an initialization string that turns the system power on.
Power Up On PCI Device [Disabled]
When set to [Enabled], this parameter allows you to turn on the system through a PCI LAN or modem card. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]
Power On By PS/2 Keyboard [Disabled]
This parameter allows you to use specific keys on the keyboard to turn on the system. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Space Bar] [Ctrl-Esc] [Power Key]
Automatic Power Up [Disabled]
This allows an unattended or automatic system power up. You may configure your system to power up at a certain time of the day by selecting [Everyday] or at a certain time and day by selecting [By Date]. Configuration options: [Disabled] [Everyday] [By Date]

2.5.2 Hardware Monitor

MB Temperature [xxxC/xxxF] CPU Temperature [xxxC/xxxF]
The onboard hardware monitor automatically detects and displays the motherboard and CPU temperatures. Select [Ignore] to disable the MB or CPU temperature autodetect function.
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, the specific field shows N/A.
VCORE Voltage, +3.3V Voltage, +5V Voltage, +12V Voltage
The onboard hardware monitor automatically detects the voltage output through the onboard voltage regulators.
If any of the monitored items is out of range, the following error message appears: Hardware Monitor found an error. Enter Power setup menu for details. And be prompted to Press F1 to continue or DEL to enter SETUP.

Boot Menu

Boot Sequence
The Boot menu allows you to select among the four possible types of boot devices listed using the up and down arrow keys. By using the <+> or <Space> key, you can promote devices and by using the <-> key, you can demote devices. Promotion or demotion of devices alters the priority which the system uses to search for a boot device on system power up. Configuration fields include Removable Devices, IDE Hard Drive, ATAPI CD-ROM, and Other Boot Device.

Adobe Acrobat Reader

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

ASUS Screen Saver

This item installs the ASUS screen saver.
3.2.4 ASUS Contact Information
Clicking the ASUS Contact Information tab displays as stated. You may also find this information on page viii of this user guide.
The motherboard is equipped with a BIOS-based audio playback feature called Instant Music Lite. This feature is supported by the onboard audio AC97 CODEC, and requires an optical drive (CD-ROM, DVD-ROM, or CD-RW).
1. 2. 3. Instant Music Lite only supports CDs in audio format. Instant Music Lite does not work if you installed and enabled an add-on sound card. Instant Music Lite only supports PS/2 keyboard.
To enable ASUS Instant Music Lite:
1. Connect the analog audio cable from the optical drive (CD-ROM, DVD-ROM, or CD-RW drive) to the 4-pin CD-In connector (labeled CD1) on the motherboard. See section 1.12 Connectors for the connector location.
Make sure to connect the CD-ROM audio cable. Otherwise, you cannot control the audio volume using the Instant Music Lite function keys.
2. Turn on the system and enter BIOS by pressing the Delete key during the Power On Self-Tests (POST). 3. In the Advanced Configuration menu, select the item Instant Music and set it to Enabled. See section 2.4 Advanced Menu in the user guide. 4. Highlight the Instant Music CDROM item and press Enter to display the CD-ROM options. Select the CD-ROM drive that you wish to use for this feature. See section 2.4 Advanced Menu in the user guide.
If you have only one optical drive (either CD-ROM, DVD-ROM, or CD-RW) installed in the system, you dont have to set Instant Music CDROM item. BIOS automatically detects and displays the installed drive type.
5. Save your changes and exit BIOS Setup.
1. 2. 3. The Scroll Lock LED is fixed to ON after enabling Instant Music. The Caps Lock LED is turns ON when you pause the CD playback. When set to Instant Music Lite mode, the system wake-up features (LAN, keyboard, mouse, USB) are deactivated. In this case, power up the system using the power switch. If the system lost connection or did not detect any optical drive, the Instant Music Lite feature turns OFF (disabled) automatically. A beep indicates this condition.
To use ASUS Instant Music Lite:
1. Ensure that the power cord is plugged to a grounded power source, so that the system has a standby power. 2. Use either one of the two sets of special function keys on your keyboard to play audio CDs. These keys only function as indicated if you enabled the Instant Music Lite in BIOS. Instant Music function keys (Set 1)

CD ON/OFF

PLAY/PAUSE

STOP/EJECT