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 Part 15 of the FCC Rules. 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 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.

You may install 64MB, 128MB, 256MB, 512MB, and 1GB DDR DIMMs into the DIMM sockets using the memory configurations in this section.

Important notes

Installing DDR DIMMs other than the recommended configurations may cause memory sizing error or system boot failure. Use any of the recommended configurations in Table 1. Use the blue DIMM slots first. In Dual-channel configurations, install only identical (the same type and size) DDR DIMM pairs for each channel. Always install DIMMs with the same CAS latency, otherwise, the system may run in a lower frequency. For optimum compatibility, it is recommended that you obtain memory modules from the same vendor. See list of Qualified Vendors List on page 1-10. When all four sockets are populated with 1GB DIMMs (Total 4 GB), the system may detect only 3+ GB (a little less than 4 GB) due to the SouthBridge resource allocation. Three DDR DIMMs installed into any three memory sockets will function in single channel mode. Make sure that the memory frequency matches the CPU FSB. Refer to Table 2 for configurations.

DIMM_A2

DIMM_B2

Table 1

Recommended memory configurations

Sockets

Mode Single-channel (1) (2) (3) (4) Dual-channel (1) (2)
DIMM_A1 (blue) Populated Populated
DIMM_A2 (black) Populated Populated Populated
DIMM_B1 (blue) Populated Populated Populated
DIMM_B2 (black) Populated Populated Populated

(3) *Populated

* For dual-channel configuration (3), you may: install identical DIMMs in all four sockets install identical DIMM pair in DIMM_A1 and DIMM_B1 (blue sockets) and identical DIMM pair in DIMM_A2 and DIMM_B2 (black sockets) install same size DIMMs in DIMM_A1 and DIMM_B1 (blue sockets) and another same size pair in DIMM_A2 and DIMM_B2 (black sockets)

Table 2

Memory frequency/CPU FSB synchronization
This motherboard supports different memory frequencies depending on the CPU FSB (Front Side Bus) and the type of DDR DIMM.
CPU FSB 800 MHz 533 MHz 400 MHz DDR DIMM Type PC3200/PC2700/PC2100 PC2700/PC2100 PC2100 Memory Frequency 400/320*/266 MHz 333/266 MHz 266 MHz
*When using 800 MHz FSB CPU, PC2700 DDR DIMMs run only at 320MHz (not 333MHz) due to chipset limitation.

DDR400 Qualified Vendor List (QVL)

DIMM support

Size 256MB 256MB 256MB 512MB 512MB 512MB 512MB
Vendor A DATA A DATA A DATA A DATA A DATA A DATA ATP
Model MDOAD5F3G31Y0D1E02 MDOHY6F3G31Y0N1E0Z MDOSS6F3G31Y0K1E0Z MDOAD5F3H41Y0D1E02 MDOHY6F3H41Y0N1E0Z MDOSS6F3H41Y0N1E0Z AG64L64T8SQC4S
Brand N/A Hynix SAMSUNG N/A Hynix SAMSUNG SAMSUNG
Side(s) SS SS SS DS DS DS DS
Component ADD8608A8A-5B HY5DU56822CT-D43 K4H560838E-TCCC ADD8608A8A-5B HY5DU56822CT-D43 K4H560838F-TCCC K4H560838D-TCC4
(Continued on the next page)

Vendor

Model B6U808-256M-SAM-400 B6U808-512M-SAM-400 DXV6S8MC5BC3U27E DXV6S8SSCCD3K27C DXV6S8SSCCE3K27E DXV2S8MC5BC3U27E DXV2S8SSCCD3K27C DXV2S8SSCCE3K27E CMX256A-3200C2PT VS256MB330308147 VS256MB400 CMX512-3200C2 VS512MB333 VS512MB400 M2U25664DS88B3G-5T M2U25664DS8HB3G-5T GD3200-256V GD3200-512V GE5123200B HYMD216646C(L)6-H HYMD232726B(L)8-H HYMD232726B(L)8-J HYS64D32300GU-5-C HYS64D32300GU-6 HYS64D32300GU-5-B HYS64D64320GU-5-C HYS64D64320GU-6-C KVR400X64C3A/256 KVR333X64C25/512 KVR33X64C/256 KVR400X64C3A/512 N/A N/A MT8VDDT3264AG-40BCB MT16VDDT6464AG-40BCB AL5D8B53T-5B1K AL6D8A53T1-5B AL6D8B53T-5B1K M368L3223ETM-CCC M368L3223ETM-CCC M368L3223FTN-CCC M368L6423FTN-CB M368L6423ETM-CCC M368L6423FTN-CCC VT400FMV/2561103 VT400FMV/5121003
Brand SAMSUNG SAMSUNG MICRON SAMSUNG SAMSUNG MICRON SAMSUNG SAMSUNG Winbond SAMSUNG VALUE seLecT Winbond VALUE seLecT VALUE seLecT NANYA NANYA GEIL GEIL GEIL Hynix Hynix Hynix Infineon Infineon Infineon Infineon Infineon Hynix Hynix Kingston Hynix VT VT MICRON MICRON PSC PSC PSC SAMSUNG SAMSUNG SAMSUNG SAMSUNG SAMSUNG SAMSUNG VT VT
Side(s) SS DS SS SS SS DS DS DS SS SS SS DS DS DS SS DS SS DS DS SS SS SS SS SS DS DS DS SS DS DS DS SS DS SS DS SS DS DS SS SS SS DS DS DS SS DS
Component K4H560838D-TCC4 K4H560838D-TCC4 MT46V32M8TG-5BC K4H560838D-TCCC K4H560838E-TCCC MT46V32M8TG-5BC K4H560838D-TCCC K4H560838E-TCCC W942508BH-5 K4H560838D-TCB3 VS32M8-5 N/A VS32M8-6 VS32M8-5 N2DS25680BT-5T N2DS25680BT-5T GLIL DDR 32M8 GLIL DDR 32M8 GL3LC32G88TG-5A HY5DU561622CT-H HY5DU56822BT-H HY5DU56822BT-J HYB25D256800CE-5C HYB25D256800CE-6C HYB25D256800CE-6C HYB25D256800CE-6C HYB25D256800CE-6C HY5DU56822BT-D43 HY5DU56822BT-J 03208DHIT-6 HY5DU56822BT-D43 VT3225804T-5 VT3225804T-5 MT46V32M8TG-5BC MT46V32M8TG-5BC A2S56D30BTP A2S56D30ATP A2S56D30BTP K4H560838E-TCCC K4H560838E-TCCC K4H560838F-TCCC K4H560939S-TCCC K4H560838E-TCCC K4H560838F-TCCC VT56DD32M8PC-5 VT56DD32M8PC-5

A

B

C

256MB BRAIN POWER 512MB BRAIN POWER 256MB CENTURY 256MB 256MB 512MB 512MB 512MB 256MB 256MB 256MB 512MB 512MB 512MB 256MB 512MB 256MB 512MB 512MB 128MB 256MB 256MB 256MB 256MB 512MB 512MB 512MB 256MB 512MB 512MB 512MB 256MB 512MB 256MB 512MB 256MB 512MB 512MB 256MB 256MB 256MB 256MB 512MB 512MB 256MB 512MB CENTURY CENTURY CENTURY CENTURY CENTURY CORSAIR CORSAIR CORSAIR CORSAIR CORSAIR CORSAIR elixir elixir GEIL GEIL GEIL Hynix Hynix Hynix Infineon Infineon Infineon Infineon Infineon KINGSTON KINGSTON KINGSTON KINGSTON Kreton Kreton MICRON MICRON PSC PSC PSC SAMSUNG SAMSUNG SAMSUNG SAMSUNG SAMSUNG SAMSUNG Veritech Veritech
Side(s): SS - Single Sided DIMM Support:

DS - Double Sided

A - supports one module inserted into either slot, in a Single-channel memory configuration. B - supports on pair of modules inserted into either the slots as one pair of Dual-channel memory configuration. C - support for 4 modules inserted into all the slots as two pairs of Dual-channel memory configuration.
Obtain DDR DIMMs only from ASUS qualified vendors. Visit the ASUS website (www.asus.com) for the latest QVL.

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.

Unlocked DDR DIMM

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

To install and configure an expansion card: 1. Install an expansion card following the instructions that came with the chassis. 2. Turn on the system and change the necessary BIOS settings, if any. See Chapter 2 for BIOS information. 3. Assign an IRQ to the card. Refer to the tables next page. 4. Install the drivers and/or software applications for the expansion card according to the card documentation.

P-ATA Secondary

(2 devices)
Operating System 1. Windows 2000/XP 2. Windows 98/ME Configuration A Configuration B Configuration C

Legend:

Primary

S-ATA Port 0 Port 1

(1 device) (1 device)

Supported Disabled

Required IDE Configuration settings in BIOS
Refer to the following table for the appropriate BIOS settings of the above P-ATA and S-ATA device configurations. See section 2.3.5 IDE Configuration for details on the related BIOS items.

Windows 2000/XP

Enhanced Mode

BIOS item

Onboard IDE Operate Mode

Windows 98/Me/NT4.0 B

Compatible Mode
Enhanced Mode Support On S-ATA IDE Port Settings

Sec. P-ATA+S-ATA

Primary P-ATA+S-ATA

P-ATA Ports Only

4. 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 ATX power 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 300W for a fully configured system. The system may become unstable and may experience difficulty powering up if the power supply is inadequate.

ATX12V

+12V DC GND

ATXPWR

+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
P4P800-X ATX power connectors
Do not forget to connect the 4-pin ATX12V power connector, otherwise, the system will not boot.
5. Internal audio connectors (4-pin CD, AUX) These connectors allow you to receive stereo audio input from sound sources such as a CD-ROM, TV tuner, or MPEG card.

(Black)

Right Audio Channel Ground Ground Left Audio Channel Right Audio Channel Ground Ground Left Audio Channel

(White)

P4P800-X Internal audio connectors

ATX Power Switch/Soft-off Switch Lead (Light Green 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 (Red 2-pin IDE_LED) 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.
The System Panel connector is color-coded for easy and foolproof connection. Take note of the specific connector colors as described.

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 AFUDOS - Updates the BIOS using a bootable floppy disk in DOS mode. 2. ASUS EZ Flash - Updates the BIOS using a floppy disk during POST. 3. ASUS CrashFree BIOS 2 - Updates the BIOS using a bootable floppy disk or the motherboard support CD. Refer to the corresponding sections for details on these utilities.
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 AFUDOS (refer to section 2.1.3 Using AFUDOS to copy BIOS from PC) 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 a. b. c. d. then press <Enter>. Windows 98SE/ME/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. If you are using Windows XP, select Create an MS-DOS startup disk from the format options field, then click Start. OR If you are using Windows 98SE/ME, select Full option button from the format type, then click Start. Windows 2000 environment To create a set of boot disks for Windows 2000, run the Makeboot.exe tool from the Windows 2000 CD: a. Insert a 1.44 MB floppy disk into the floppy disk drive. b. Insert the Windows 2000 CD into the CD-ROM drive.
Chapter 2: BIOS information

c. Click Start, then select Run. d. From the Open box, type D:\bootdisk\makeboot a: then press <Enter>, assuming that D: is your CD-ROM drive. e. Follow succeeding screen instructions. 2. Copy the original (or the latest) motherboard BIOS to the bootable floppy disk.
2.1.2 Using AFUDOS to update the BIOS
To update the BIOS using the AFUDOS.EXE utility: 1. Visit the ASUS website (www.asus.com) to download the latest BIOS file for your motherboard. Save the BIOS file to a bootable floppy disk.
Write the BIOS file name on 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. 4. At the DOS prompt, type the command line: afudos /i[filename] where [filename] means the latest (or original) BIOS file that you copied to the bootable floppy disk. 5. Press <Enter>. The succeeding screen displays the status of the update process.
The BIOS information on the screen is for reference only. What you see on your screen may not be exactly the same as shown.
A:\>afudos /iP4P800X.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!
When the BIOS update process is complete, the utility returns to the DOS prompt.
A:\>afudos /iP4P800X.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%) Verifying flash. done A:\>
5. Reboot the system from the hard disk.
2.1.3 Using AFUDOS to copy BIOS from PC
You can use the AFUDOS.EXE utility to copy the current system BIOS to a floppy or hard disk and use it as a backup in case the system BIOS fails or gets corrupted. To copy the BIOS from your PC using AFUDOS.EXE: 1. At the DOS prompt, type the command line: afudos /o[filename] where [filename] string of not more than eight (8) alpha-numeric characters for the main filename and three (3) alpha-numeric characters for the extension name. 2. Press <Enter>.

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%)
3. The utility will copy the current system BIOS by default to the floppy disk. Make sure that the floppy disk has at least 600KB of free disk space and is not writeprotected.
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 copy process is complete, the utility returns to the DOS prompt.
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 and rename the downloaded file as P4P800X.ROM. 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 in the drive, the error message Floppy not found! appears. If the correct BIOS file is not in the floppy disk, the error message Floppy not found! is displayed. Make sure to rename the downloaded BIOS file as P4P800X.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.
User recovery requested. Starting BIOS recovery. Checking for floppy. Floppy found! Reading file P4P800X.ROM. Completed. Start flashing. Flashed successfully. Rebooting.
2.1.5 Recovering the BIOS with CrashFree BIOS 2
The CrashFree BIOS 2 auto recovery tool allows you to restore BIOS from the motherboard support CD, or from a floppy disk that contains the BIOS file, in case the current BIOS on the motherboard fails or gets corrupted.
Prepare the support CD that came with the motherboard or a floppy disk that contains the motherboard BIOS before proceeding with the BIOS update process. If you have saved a copy of the original motherboard BIOS to a bootable floppy disk, you may also use this disk to restore the BIOS. See section 2.1.1 Creating a bootable floppy disk.
To recover the BIOS from a floppy disk:
1. Boot the system. 2. When a corrupted BIOS is detected, the following screen message appears.

The Enhanced Mode Support On appears only when the item Onboard IDE Operate Mode is set to Enhanced Mode.
IDE Port Settings [Primary P-ATA+S-ATA]
Allows selection of the IDE ports to activate if you are using a legacy operating system. Set to [Primary P-ATA+S-ATA] if you wish to use the primary Parallel ATA and Serial ATA ports, or set to [Secondary P-ATA+SATA] to enable the secondary P-ATA port instead. Setting to [P-ATA Ports Only] disables the two Serial ATA ports supported by ICH5. Configuration options: [Primary P-ATA+S-ATA] [Secondary P-ATA+S-ATA] [P-ATA Ports Only]
The IDE Port Settings appears only when the item Onboard IDE Operate Mode is set to Compatible Mode.

IDE Detect Time Out [35]

Selects the time out value for detecting ATA/ATAPI devices. Configuration options: [0] [5] [10] [15] [20] [25] [30] [35]

2.3.6 System Information

This menu gives you an overview of the general system specifications. The items in this menu are auto-detected by BIOS.
AMIBIOS Version Build Date Processor Type Speed Count

: 08.00.09 : 04/28/04

: Intel(R) Pentium(R) 4 Family CPU 2.40G : 2399MHz : 1
System Memory Size : 256MB

AMI BIOS

This item displays the auto-detected BIOS information.

Processor

This item displays the auto-detected CPU specification.

System Memory

This item displays the auto-detected system memory.

Advanced menu

Take caution when changing the settings of the Advanced menu items. Incorrect field values may cause the system to malfunction.
The Advanced menu items allow you to change the settings for the CPU and other system devices.
JumperFree Configuration CPU Configuration Chipset Onboard Devices Configuration PCIPnP USB Configuration
Adjust system frequency/voltage
2.4.1 JumperFree Configuration
Configure System Frequency/Voltage AI Overclock Tuner CPU VCore Voltage [Standard] [Auto] Select the target CPU frequency, and the relevant parameters will be autoadjusted. Frequencies higher than CPU manufacturer
AI Overclock Tuner [Standard]
Allows selection of CPU overclocking options to achieve desired CPU internal frequency. Select either one of the preset overclocking options. Configuration options: [Manual] [Standard] [Overclock 5%] [Overclock 10%] [Overclock 20%] [Overclock 30%]

This should be enabled inorder to boot legacy OSes that cannot support CPUs with extended CPUID functions.

: 8 KB : 512 KB : 0 KB

Ratio Status: Locked Ratio Actual Value: 18 Max CPUID Value Limit: [Disabled]
If you are using an unlocked CPU, the item CPU Ratio appears. You may select your desired ratio from the available options.

CPU Ratio [12]

Sets the ratio between the CPU Core Clock and the Front Side Bus (FSB) frequency.
If an invalid ratio is set in CMOS, the actual and setpoint values may differ.
Max CPUID Value Limit [Disabled]
This item allows you to enable or disable support of older OS for CPU ID maximum value limit. Configuration options: [Disabled] [Enabled]
Hyper-Threading Technology [Enabled]
This item allows you to enable or disable the processor Hyper-Threading Technology. Configuration options: [Disabled] [Enabled]
The item Hyper-Threading Technology appears only if you installed an Intel Pentium 4 CPU that supports this feature. See page1-7 for details.

2.4.3 Chipset

The Chipset menu items allow you to change the advanced chipset settings. Select an item then press Enter to display the sub-menu.
Advanced Chipset Settings Warning: Setting wrong values in below sections may cause system to malfunction. Configure DRAM Timing by SPD Memory Acceleration Mode DRAM Idle Timer DRAM Refresh Rate Graphic Adapter Priority Graphics Aperture Size Spread Spectrum ICH Delayed Transaction MPS Revision 1.1/1.4 [Enabled] [Auto] [Auto] [Auto] [AGP/PCI] [ 64MB] [Enabled] [Enabled] [1.4]
Set DRAM timing parameters according to DRAM SPD or manually.
Configure DRAM Timing by SPD [Enabled]
When this item is enabled, the DRAM timing parameters are set according to the DRAM SPD (Serial Presence Detect). When disabled, you can manually set the DRAM timing parameters through the DRAM sub-items. Configuration options: [Disabled] [Enabled]
The following sub-items appear only when the item Configure DRAM Timing by SPD is set to Disabled.
DRAM CAS# Latency [2.5 Clocks]
This item controls the latency between the SDRAM read command and the time the data actually becomes available. Configuration options: [2.0 Clocks] [2.5 Clocks] [3.0 Clocks]
DRAM RAS# Precharge [4 Clocks]
This item controls the idle clocks after issuing a precharge command to the DDR SDRAM. Configuration options: [4 Clocks] [3 Clocks] [2 Clocks]
DRAM RAS# to CAS# Delay [4 Clocks]
This item controls the latency between the DDR SDRAM active command and the read/write command. Configuration options: [4 Clocks] [3 Clocks] [2 Clocks]

Do not change the APIC support settings after OS installation, otherwise, a system boot failure may occur.
2.5.6 Advanced Power Management (APM) Configuration
Power Management/APM Video Power Down Mode Hard Disk Power Down Mode Suspend Time Out Throttle Slow Clock Ratio Power Button Mode Restore on AC Power Loss Power Power Power Power Power On On On On On By By By By By RTC Alarm External Modems PCI Devices PS/2 Keyboard PS/2 Mouse [Enabled] [Disabled] [Disabled] [Disabled] [50%] [On/Off] [Power Off] [Disabled] [Disabled] [Disabled] [Disabled] [Disabled] Enable or disable APM.
Power Management/APM [Enabled]
Allows you to enable or disable the Advanced Power Management (APM) feature. Configuration options: [Disbaled] [Enabled]
Video Power Down Mode [Suspend]
Allows you to select the video power down mode. Configuration options: [Disabled] [Standby] [Suspend]
Hard Disk Power Down Mode [Suspend]
Allows you to select the hard disk power down mode. Configuration options: [Disabled] [Standby] [Suspend]
Suspend Time Out [Disabled]
Allows you to select the specified time at which the system goes on suspend. Configuration options: [Disabled] [1-2 Min] [2-3 Min] [4-5 Min] [8-9 Min] [10 Min] [20 Min] [30 Min] [40 Min] [50 Min] [60 Min]
Throttle Slow Clock Ratio [50%]
Allows you to select the duty cycle in throttle mode. Configuration options: [87.5%] [75.0%] [62.5%] [50%] [37.5%] [25%] [12.5%]
Power Button Mode [On/Off]
Allows the system to go into On/Off mode or suspend mode when the power button is pressed. Configuration options: [On/Off] [Suspend]
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]
Power On By RTC Alarm [Disabled]
Allows you to enable or disable RTC to generate a wake event. When this item is set to Enabled, the items RTC Alarm Date, RTC Alarm Hour, RTC Alarm Minute, and RTC Alarm Second appear with set values. Configuration options: [Disabled] [Enabled]
Power On By External 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: [Disabled] [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.

2.6.2 Boot Settings Configuration
Boot Settings Configuration Quick Boot Full Screen Logo AddOn ROM Display Mode Bootup Num-Lock PS/2 Mouse Support Typematic Rate Boot to OS/2 Wait for F1 If Error Hit DEL Message Display Interrupt 19 Capture [Enabled] [Enabled] [Force BIOS] [On] [Auto] [Fast] [No] [Enabled] [Enabled] [Disabled] Allows BIOS to skip certain tests while booting. This will decrease the time needed to boot the system.

Quick Boot [Enabled]

Enabling this item allows the BIOS to skip some power on self tests (POST) while booting to decrease the time needed to boot the system. When set to [Disabled], BIOS performs all the POST items. Configuration options: [Disabled] [Enabled]
Full Screen Logo [Enabled]
This allows you to enable or disable the full screen logo display feature. Configuration options: [Disabled] [Enabled]
Make sure that the Full Screen Logo item is set to [Enabled] if you wish to use the ASUS MyLogo feature.
Add On ROM Display Mode [Force BIOS]
Sets the display mode for option ROM. Configuration options: [Force BIOS] [Keep Current]

Bootup Num-Lock [On]

Allows you to select the power-on state for the NumLock. Configuration options: [Off] [On]
PS/2 Mouse Support [Auto]
Allows you to enable or disable support for PS/2 mouse. Configuration options: [Disabled] [Enabled] [Auto]

Typematic Rate [Fast]

Allows you to select the keyboard typematic rate. Configuration options: [Slow] [Fast]

Boot to OS/2 [No]

Allows you to specify the OS/2 compatibility mode. Configuration options: [No] [Yes]
Wait for F1 If Error [Enabled]
When set to Enabled, the system waits for F1 key to be pressed when error occurs. Configuration options: [Disabled] [Enabled]
Hit DEL Message Display [Enabled]
When set to Enabled, the system displays the message Press DEL to run Setup during POST. Configuration options: [Disabled] [Enabled]
Interrupt 19 Capture [Disabled]
When set to [Enabled], this function allows the option ROMs to trap Interrupt 19. Configuration options: [Disabled] [Enabled]

2.6.3 Security

The Security menu items allow you to change the system security settings. Select an item then press Enter to display the configuration options.
Security Settings Supervisor Password User Password : Not Installed : Not Installed
<Enter> to change password. <Enter> again to disable password.
Change Supervisor Password Change User Password Clear User Password Boot Sector Virus Protection [Disabled]
Change Supervisor Password
Select this item to set or change the supervisor password. The Supervisor Password item on top of the screen shows the default Not Installed. After you have set a password, this item shows Installed. To set a Supervisor Password: 1. Select the Change Supervisor Password item and press Enter. 2. On the password box that appears, type a password composed of letters and/ or numbers, then press Enter. Your password should have at least six characters. 3. Confirm the password when prompted. The message Password Installed appears after you have successfully set your password. The Supervisor Password item now shows Installed. To change the supervisor password, follow the same steps as in setting a user password. To clear the supervisor password, select the Change Supervisor Password then press Enter. The message Password Uninstalled appears.

Exit menu

The Exit menu items allow you to load the optimal or failsafe default values for the BIOS items, and save or discard your changes to the BIOS items.
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 [Ok] 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 [Ok] 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 [Ok] to load default values. Select Exit and Save 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

Install an operating system
This motherboard supports Windows 98SE/ME/2000/XP/2003 Server operating system (OS). Always install the latest OS version and corresponding updates so you can maximize the features of your hardware.
Because motherboard settings and hardware options vary, use the setup procedures presented in this chapter for general reference only. Refer to your OS documentation for more information.