Motherboard

A8N-SLI
E2068 Revised Edition V2 April 2005
Copyright 2005 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.... vi Safety information... vii A8N-SLI specifications summary... viii

Chapter 1:

1.1 1.2

Hardware

information
Before you proceed.. 1 - 2 Motherboard overview... 1 - 3 1.2.1 1.2.2 1.2.3 1.2.4 Placement direction.. 1 - 3 Screw holes... 1 - 3 Motherboard layout.. 1 - 4 Layout contents... 1 - 5 Installing the CPU... 1 - 7 Installing the heatsink and fan.. 1 - 9 Overview... 1 - Memory configurations.. 1 - Installing a DIMM.. 1 - Removing a DIMM... 1 - Installing an expansion card. 1 - Configuring an expansion card. 1 - PCI slots... 1 - PCI Express x16 slot.. 1 - PCI Express x1 slot... 1 - 1 6
Central Processing Unit (CPU).. 1 - 7 1.3.1 1.3.2
System memory... 1 - 1.4.1 1.4.2 1.4.3 1.4.4
Expansion slots.. 1 - 1.5.1 1.5.2 1.5.3 1.5.4 1.5.5

1.6 1.7

Jumper... 1 - Connectors... 1 - 1.7.1 1.7.2 Rear panel connectors.. 1 - Internal connectors.. 1 - 2 0

Chapter 2:

2.1 2.1.1 2.1.2 2.2 2.2.1 2.2.2 2.3 2.3.1 2.3.2 2.3.3 2.3.4 2.3.5 2.3.6 2.3.7 2.4 2.4.1 2.4.2 2.4.3 2.4.4 2.5 2.5.1 2.5.2 2.6 2.6.1 2.6.2 2.6.3 2.6.4 2.7

BIOS setup

Creating a bootable floppy disk.. 2 - 2 AwardBIOS Flash Utility... 2 - 3 BIOS menu bar... 2 - 9 Legend bar.. 2 - 9 System Time... 2 - System Date... 2 - Legacy Diskette A.. 2 - Installed Memory.. 2 - Primary and Secondary IDE Master/Slave. 2 - First, Second, Third, and Fourth SATA Master.. 2 - Installed Memory.. 2 - CPU configuration... 2 - Chipset configuration... 2 - PCIPnP.. 2 - Onboard device configuration. 2 - APM configuration.. 2 - Hardware monitor... 2 - Boot Device Priority.. 2 - Hard Disk Drives.. 2 - Boot settings configuration. 2 - Security... 2 - 3 6
Managing and updating your BIOS.. 2 - 2
BIOS Setup program.. 2 - 8

Main Menu... 2 - 1 1

Advanced Menu... 2 - 1 6

Power Menu... 2 - 2 8

Boot Menu... 2 - 3 2

Exit menu.... 2 - 3 7

Chapter 3:
3.1 3.1.1 3.1.2 3.2 3.2.1 3.2.2 3.2.3 3.2.4
NVIDIA SLI technology support
Requirements... 3 - 2 ASUS Certified SLI Graphics cards.. 3 - 2 Setting the ASUS EZ selector card.. 3 - 4 Installing SLI-ready graphics cards.. 3 - 6 Installing the device drivers. 3 - Enabling the multi-GPU feature in Windows.. 3 - 1 0

Overview... 3 - 2

Dual graphics card setup... 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 adapter 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.

Place this side towards the rear of the chassis

ASUS A8N-SLI

layout

24.5cm (9.6in)

P S /2K B MS T: Mous e B : Keyboard

C P U_FAN AT X12V

S P DIF _O
DDR DIMM_A1 (64 bit,184-pin module)
DDR DIMM_A2 (64 bit,184-pin module)
DDR DIMM_B 1 (64 bit,184-pin module)
DDR DIMM_B 2 (64 bit,184-pin module)

S P DIF _O2

PA R A L L E L P OR T

S ocket 939

E AT XP WR

F LOP P Y

S ATA3 S ATA1

US B 12

LAN1_US B 34 CD AUX
Top:Line In C enter:Line Out B ottom:Mic In

F P _AUDIO

E Z_P LUG

WAR N_LE D

P C IE X16_1

P C IE X1_1

ALC 850

A 8N-S L I

S LI_C ON NVIDIA nForce 4 S LI

C HIP _FAN

P C IE X1_2

P C IE X16_2

P C I1 P C I2
C R 2032 3V Lithium C ell C MOS P ower

S ATA4

S ATA2

4Mb B IOS

1394 C ontroller

P C I3

US B 78 IE _1394_2 S B _P WR US B 56

C LR T C

S uper I/O

C HA1_FAN C HAS S IS

US B 910

F _PANE L

30.5cm (12.0in)
Top:R ear S peaker Out C enter: S ide S peaker Out B elow: C enter/S ubwoofer

Marvell 88E 1111

S E C _IDE P R I_IDE

Layout

contents

Page 1-12 1-16 1-16 1-16

1. DDR DIMM slots 2. PCI slots 3. PCI Express x16 slot 4. PCI Express x1 slot
Jumper 1. Clear RTC RAM (3-pin CLRTC)

Page 1-17

connectors
Page 1-18 1-18 1-18 1-18 1-18 1-18 1-18 1-19 1-19 1-19 1-19 1-19 1-19 1-19 1-19
1. PS/2 mouse port 2. Parallel port 3. LAN (RJ-45) port 4. Rear Speaker Out port 5. Side Spearker Out port 6. Line In port 7. Line Out port 8. Microphone port 9. Center/Subwoofer port 10. USB 2.0 ports 3 and 4 11. USB 2.0 ports 1 and 2 12. IEEE 1394a port 13. Optical S/PDIF Out port 14. Coaxial S/PDIF Out port 15. PS/2 keyboard port

Internal

Page 1-20 1-20 1-21 1-22 1-23 1-23 1-23 1-24 1-24 1-25 1-26 1-26 1-27 1-28
1. Floppy disk drive connector (34-1 pin FLOPPY1) 2. Serial port connector (10-1 pin COM1) 3. IDE connectors (40-1 pin PRI_IDE, SEC_IDE) 4. Serial ATA connectors (7-pin SATA1, SATA2, SATA3, SATA4) 5. CPU fan connector (3-pin CPU_FAN) 6. Chassis fan connectors (3-pin CHA1_FAN) 7. Chipset fan connector (3-pin CHIP_FAN) 9. USB connectors (10-1 pin USB78, USB56, USB910) 10. IEEE 1394a connector (10-1 pin IE_1394_2) 11. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V1, 4-pin EZ_PLUG) 12. Internal audio connectors (4-pin AUX, 4-pin CD) 13. Front panel audio connector (10-1 pin FP_AUDIO) 14. Chassis intrusion connector (4-1 pin CHASSIS) 15. System panel connector (10-1 pin FRONTPANEL)

Connectors

Rear panel connectors

1. 2. 3.

PS/2 mouse port (green). This port is for a PS/2 mouse. Parallel port. This 25-pin port connects a parallel printer, a scanner, or other devices. LAN 2 (RJ-45) port. Supported by the Marvell 88E81111 Gigabit LAN controller, this port allows Gigabit connection to a Local Area Network (LAN) through a network hub.

LAN port LED indications

ACT/LINK LED Status OFF GREEN BLINKING Description No link Linked Data activity Status OFF ORANGE GREEN SPEED LED Description 10 Mbps connection 100 Mbps connection 1 Gbps connection

ACT/LINK SPEED LED LED

LAN port

4. 5. 6. 7.

Rear Speaker Out port (gray). This port connects the rear speakers on a 4-channel, 6-channel, or 8-channel audio configuration. Side Speaker Out port (black). This port connects the side speakers in an 8-channel audio configuration. Line In port (light blue). This port connects the tape, CD, DVD player, or other audio sources. Line Out port (lime). This port connects a headphone or a speaker. In 4-channel, 6-channel, and 8-channel configuration, the function of this port becomes Front Speaker Out.
Microphone port (pink). This port connects a microphone. Center/Subwoofer port (yellow orange). This port connects the center/subwoofer speakers.
Refer to the audio configuration table below for the function of the audio ports in 2, 4, 6, or 8-channel configuration.
Audio 2, 4, 6, or 8-channel configuration
Port Light Blue Lime Pink Gray Black Yellow Orange Headset 2-channel Line In Line Out Mic In 4-channel Line In Front Speaker Out Mic In Rear Speaker Out 6-channel Line In Front Speaker Out Mic In Rear Speaker Out Center/Subwoofer 8-channel Line In Front Speaker Out Mic In Rear Speaker Out Side Speaker Out Center/Subwoofer
1 0. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports are available for connecting USB 2.0 devices. 1 1. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports are available for connecting USB 2.0 devices. 1 2. IEEE 1394a port. This 6-pin IEEE 1394 port provides high-speed connectivity for audio/video devices, storage peripherals, PCs, or portable devices. 1 3. Optical S/PDIF Out port. This port connects an external audio output device via an optical S/PDIF cable. 1 4. Coaxial S/PDIF Out port. This port connects an external audio output device via a coaxial S/PDIF cable. 1 5. PS/2 keyboard port (purple). This port is for a PS/2 keyboard.

SATA2 A8N-SLI SATA connectors
The actual data transfer rate depends on the speed of Serial ATA hard disks installed.
Serial ATA Master/Slave connectors
Connector SATA1, SATA3, SATA2 SATA4 Color Black Black Setting Master Slave Use Boot Disk Data Disk
CPU, chassis, power, and chipset fan connectors (3-pin CPU_FAN, 3-pin CHA1_FAN, 3-pin CHIP_FAN)) These fan connectors support cooling fans of 350 mA ~ 2000 mA (24 W max.) or a total of 1 A ~ 3.48 A (41.76 W max.) at +12 V. Connect the fan cable to the fan connector on the motherboard, making sure that the black wire of each cable matches the ground pin of the connector. The chipset fan connector is for the NVIDIA nForce4 SLI chipset. Connect the fan cable to the fan connector on the motherboard.
Do not forget to connect the fan cables to the fan connectors. Insufficient air flow inside the system may damage the motherboard components. These are not jumpers! DO NOT place jumper caps on the fan connectors.

C P U_FAN

C HA1_FAN

G ND +12V R otation

A 8N-S L I F an c onnec tors
G ND +12V R otation G ND +12V R otation G ND +12V R otation
USB connectors (10-1 pin USB78, USB56, USB910) These connectors are for USB 2.0 ports. Connect the USB/GAME module cable to any of these connectors, then install the module to a slot opening at the back of the system chassis. These USB connectors comply with USB 2.0 specification that supports up to 480 Mbps connection speed.
USB+5V USB_P7USB_P7+ GND USB+5V USB_P5USB_P5+ GND

USB910

USB+5V USB_P9USB_P9+ GND
A8N-SLI USB 2.0 connectors
Never connect a 1394 cable to the USB connectors. Doing so will damage the motherboard!

connector

IE_1394_2)
This connector is for an IEEE 1394a port. Connect the IEEE 1394a module cable to this connector, then install the module to a slot opening at the back of the system chassis.

+12V TPB1+ GND TPA1+

IE_1394_2 A8N-SLI IEEE 1394 connector

GND +12V TPB1GND TPA1-

NEVER connect a USB cable to the IEEE 1394a connector. Doing so will damage the motherboard!
USB+5V USB_P10USB_P10 + GND NC
USB+5V USB_P8USB_P8+ GND NC
USB+5V USB_P6USB_P6+ GND NC
ATX power connectors (24-pin EATXPWR, 4-pin ATX12V1, 4-pin EZ_PLUG) These connectors are for ATX power supply plugs. The power supply plugs are designed to fit these connectors in only one orientation. Find the proper orientation and push down firmly until the connectors completely fit.

F_PANEL

IDE_LED+ IDE_LEDGround Reset NC

IDE_LED

* Requires an ATX power supply.
A8N-SLI System panel connector
System power LED (2-pin PLED) This 3-pin connector is for the system power LED. Connect the chassis power LED cable to this connector. The system power LED lights up when you turn on the system power, and blinks when the system is in sleep mode. Hard disk drive activity (2-pin IDE_LED) This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable to this connector. The IDE LED lights up or flashes when data is read from or written to the HDD. Power/Soft-off button (2-pin PWRSW) This connector is for the system power button. Pressing the power button turns the system ON or puts the system in SLEEP or SOFT-OFF mode depending on the BIOS settings. Pressing the power switch for more than four seconds while the system is ON turns the system OFF. Reset button (2-pin RESET) This 2-pin connector is for the chassis-mounted reset button for system reboot without turning off the system power.

PLED+ PLEDPWR GND

This chapter tells how to change the system settings through the BIOS Setup menus. Detailed descriptions of the BIOS parameters are also provided.
Managing and updating your BIOS
The following utilities allow you to manage and update the motherboard Basic Input/Output System (BIOS) setup. 1. 2. AwardBIOS Flash Utility (Updates the BIOS using a floppy disk during POST.) ASUS CrashFree BIOS 2 Utility (Updates the BIOS using a bootable floppy disk when the BIOS gets corrupted.)
Refer to the corresponding section for details on these utilities.

Important

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 system builders website and download the latest BIOS file for this motherboard using the ASUS Update utility.
Creating a bootable floppy disk
Do either one of the following to create a bootable floppy disk. DOS environment a. Insert a 1.44 MB floppy disk into the drive. b. At the DOS prompt, type format A:/S then press <Enter>. Windows XP environment a. Insert a 1.44 MB floppy disk to the floppy disk drive. b. Click Start from the Windows desktop, then select My Computer. c. Select the 3 1/2 Floppy Drive icon. d. 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. Windows 2000 environment To create a set of boot disks for Windows 2000:

Chapter 2: BIOS setup

a. Insert a formatted, high density 1.44 MB floppy disk into the drive. b. Insert the Windows 2000 CD to the optical drive. c. Click Start, then select Run. d. From the Open field, type D:\bootdisk\makeboot a: assuming that D: is your optical drive. e. Press <Enter>, then follow screen instructions to continue. 2. Copy the original or the latest motherboard BIOS file to the bootable floppy disk.

1098765432109876543210987654321 1098765432109876543210987654321

Write OK

No Update
Warning: Dont Turn Off Power Or Reset System!
Do not turn off or reset the system during the flashing process!
The utility displays a Flashing Complete message indicating that you have successfully flashed the BIOS file. Remove the floppy disk then press <F1> to restart the system.
AwardBIOS Flash Utility for ASUS V1.09 (C) Phoenix Technologies Ltd. All Rights Reserved For NF-KC804-A8N-SLI-00 DATE: 11/30/2004 Flash Type - SST 49LF004A/B /3.3V File Name to Program: 1001-001.bin Flashing Complete Press <F1> to Continue

F1 Reset

Write Fail
Saving the current BIOS file
You can use the AwardBIOS Flash Utility to save the current BIOS file. You can load the current BIOS file when the BIOS file gets corrupted during the flashing process. To save the current BIOS file using the AwardBIOS Flash Utility: 1. 2. Follow steps 1 to 6 of the previous section. Press <Y> when the utility prompts you to save the current BIOS file. The following screen appears.
AwardBIOS Flash Utility for ASUS V1.09 (C) Phoenix Technologies Ltd. All Rights Reserved For NF-KC804-A8N-SLI-00 DATE: 11/30/2004 Flash Type - SST 49LF004A/B /3.3V File Name to Program: 1001-001.bin Save current BIOS as:

Message:

Type a filename for the current BIOS file in the Save current BIOS as field, then press <Enter>.
AwardBIOS Flash Utility for ASUS V1.09 (C) Phoenix Technologies Ltd. All Rights Reserved For NF-KC804-A8N-SLI-00 DATE: 11/30/2004 Flash Type - SST 49LF004A/B /3.3V File Name to Program: 1001-001.bin Checksum: DAD6H Save current BIOS as: old.bin

Message: Please Wait!

4. The utility saves the current BIOS file to the floppy disk, then returns to the BIOS flashing process.
AwardBIOS Flash Utility for ASUS V1.09 (C) Phoenix Technologies Ltd. All Rights Reserved For NF-KC804-A8N-SLI-00 DATE: 11/30/2004 Flash Type - SST 49LF004A/B /3.3V File Name to Program: 1001-001.bin Now Backup System BIOS to File!
1098765432109876543210987654321
Recovering the BIOS from a floppy disk
To recover the BIOS from a floppy disk: 1. 2. 3. Turn on the system. Insert the floppy disk with the original or updated BIOS file to the floppy disk drive. The utility displays the following message and automatically checks the floppy disk for the original or updated BIOS file.

Main Menu

When you enter the Setup program, the following screen appears.
System Time System Date Legacy Diskette A Primary IDE Master Primary IDE Slave Secondary IDE Master Secondary IDE Slave First SATA Master Second SATA Master Third SATA Master Fourth SATA Master Installed Memory
17:8:12 Thu, Mar [1.44M, 3.5 in.] [ST320410A] [ASUS CD--S520/] [None] [None] [None] [None] [None] [None] 256MB
Select Menu Item Specific Help Change the internal clock.

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> key to move between the hour, minute, and second fields.

System

[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 2084). Use the <Tab> key 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.]

Installed Memory [xxxMB]

This field automatically displays the amount of conventional memory detected by the system during the boot process.
Primary and Secondary IDE Master/Slave

Primary IDE Master

x Auto Acoustic Management Disabled Primary IDE Master [Auto] Access Mode [Auto] Capacity 13579 MB Cylinder 26310 Head 16 Sector 63 PIO Mode [Auto] UDMA Mode [Auto] Transfer Mode UDMA 4
Select Menu Item Specific Help Press [Enter] to select.
The BIOS automatically detects the values opposite the dimmed items (Capacity, Cylinder, Head, Sector, and Transfer Mode). These values are not user-configurable. These items show N/A if no IDE device is installed in the system.
Auto Acoustic Management [Disabled]

WOL (PME#) From Soft-Off [Enabled]
Allows you to enable or disable the Wake-On-LAN feature. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]
WOR (RI#) From Soft-Off [Enabled]
Allows you to enable or disable the Wake-On-Ring feature. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]
Power-On By Alarm [Disabled]
Allows you to enable or disable RTC to generate a wake event. When this item is set to Enabled, the items Date of Month Alarm and Time (hh:mm:ss) Alarm items become user-configurable with set values. Configuration options: [Disabled] [Enabled]
The two succeeding items become configurable only when the Power-On By RTC Alarm item is set to [Enabled].

Day of Month Alarm [0]

To set the date of alarm, highlight this item and press <Enter> to display the Day of Month Alarm pop-up menu. Key-in a value within the specified range then press <Enter>. A [0] value means everyday. Configuration options: [Min=0] [Max=31]
Time (hh:mm:ss) Alarm [0:0:0]
To set the time of alarm: 1. 2. 3. 4. 5. 6. Highlight this item and press <Enter> to display a pop-up menu for the hour field. Key-in a value (Min=0, Max=23), then press <Enter>. Press <TAB> to move to the minutes field then press <Enter>. Key-in a minute value (Min=0, Max=59), then press <Enter>. Press <TAB> to move to the seconds field then press <Enter>. Key-in a value (Min=0, Max=59), then press <Enter>.
Power Up By PS2 Keyboard [Disabled]
Allows you to disable the Power On by PS/2 keyboard function or set specific keys on the PS/2 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] [Enabled]
Power Up By PS2 Mouse [Disabled]
When set to [Enabled], this parameter allows you to use the PS/2 mouse to turn on the system. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]

Hardware monitor

This menu shows the hardware monitor settings auto-detected by the BIOS.
Hardware Monitor Q-Fan Controller Vcore Voltage 3.3V Voltage 5V Voltage 12V Voltage CPU Temperature M/B Temperature CPU FAN Speed CHA1 FAN Speed CPU Target Temperature [Enabled] 1.50V 3.31V 4.94V 11.26V 48C 38C 4962 RPM 0 RPM [66C]
Select Menu Item Specific Help Press [Enter] to enable or disable.
Q-Fan Controller [Enabled]
Allows you to enable or disable the Q-Fan controller. Configuration options: [Disabled] [Enabled]
VCORE Voltage, +12V Voltage, 3.3V Voltage, 5VCC Voltage
The onboard hardware monitor automatically detects the voltage output through the onboard voltage regulators. These items are not user-configurable.
CPU Temperature, M/B Temperature
The onboard hardware monitor automatically detects and displays the motherboard and CPU temperatures. These items are not user-configurable.
CPU Fan Speed/CHA1 Fan Speed
The onboard hardware monitor automatically detects and displays the Chassis, CPU, and Chip fan speeds in rotations per minute (RPM). If the fan is not connected to the motherboard, the field shows 0. These items are not user-configurable.
CPU Target Temperature [66C]
Allows you to set the CPU temperature threshold. When the CPU temperature reaches the value you set, the CPU fan runs at full speed. Configuration options: [51C] [54C] [57C] [60C] [63C] [66C] [69C] [72C] [75C] [78C] [81C]
This item becomes configurable only when the Q-Fan Controller item is set to [Enabled].

Boot Menu

This Boot menu items allow you to change the system boot settings. Select an item then press <Enter> to display a pop-up menu with the configuration options.
Boot Device Priority Hard Drisk Drives Boot Settings Configuration Security

Boot Device Priority

Boot Device Priority 1st 2nd 3rd 4th Boot Boot Boot Boot Device Device Device Device [CDROM] [Removable] [Hard Disk] [Disabled]
Select Menu Item Specific Help Select your boot device priority.

1st ~ xth Boot Device

These items specify the boot device priority sequence from the available devices. The number of devices that appears on the screen depends on the number of devices installed in the system. Configuration options: [Removable] [Hard Disk] [CDROM] [Legacy LAN] [Disabled]

Hard Disk Drives

Select Menu Item Specific Help Use <up> or <down> arrow to select a device, then press <+> to move it up, or <-> to move it down the list. Press <ESC> to exit this menu.
Hard Disk Drives 1. 1st Master: ST320410A 2. Bootable Add-in Cards
Boot settings configuration
Boot Settings Configuration Case Open Warning Quick Boot Boot Up Floppy Seek Bootup Num-Lock OS Select for DRAM > 64MB Full Screen Logo Halt On [Disabled] [Enabled] [Enabled] [On] [Non-OS2] [Enabled] [No Errors]
Case Open Warning [Enabled]
Enables or disables the chassis open status feature. Setting to Enabled, clears the chassis open status. Refer to section 2.7 Internal connectors for setting details. Configuration options: [Disabled] [Enabled]

Quick Boot [Enabled]

Setting to [Enabled] allows the system to skip certain tests while booting, decreasing the time needed to boot the system. Configuration options: [Disabled] [Enabled]
Boot Up Floppy Seek [Enabled]
When [Enabled], the BIOS will seek the floppy disk drive to determine whether the drive has 40 or 80 tracks. Configuration options: [Disabled] [Enabled]

Bootup Num-Lock [On]

Allows you to select the power-on state for the NumLock. Configuration options: [Off] [On]
OS Select for DRAM > 64MB [Non-OS2]
Select [OS2] only when you are using an OS2 operating system with greater than 64MB RAM; otherwise, set to [Non-OS2]. Configuration options: [Non-OS2] [OS2]
Full Screen Logo [Enabled]
Allows you to enable or disable the full screen logo display feature. Configuration options: [Disabled] [Enabled]
Set this item to [Enabled] to use the ASUS MyLogo feature.

Halt On [No Errors]

Sets the system to halt on errors according to the system functions specified in each option. Configuration options: [All Errors] [No Errors] [All, But Keyboard] [All , But Diskette] [All, But Disk/Key]

Security

Security Supervisor Password User Password Password Check Clear Clear [Setup]
Select Menu Item Specific Help Supervisor password controls full access. <Enter> to change password.

Remove any of the two bracket covers between the graphics cards.

Bracket

Align and insert the retention bracket into the slot then secure it with a screw.
Make sure that the retention bracket firmly supports the two graphics cards.
Connect a VGA cable or a DVI-I cable to the graphics card installed on the blue PCI Express slot.
Installing the device drivers
Refer to the documentation that came with your graphics card package to install the device drivers.
Make sure that your PCI Express graphics card driver supports the NVIDIA SLI technology. Download the latest driver from the NVIDIA website (www.nvidia.com).
Enabling the multi-GPU feature in Windows
After installing your graphics cards and the device drivers, enable the Multi-Graphics Processing Unit (GPU) feature in the NVIDIA nView properties.
To enable the multi-GPU feature: 1. Click the NVIDIA Settings icon on your Windows taskbar.
From the pop-up menu, select nView Desktop Manager then click nView Properties.
From the nView Desktop Manager window, select the Desktop Management tab. Click Properties to display the Display Properties dialog box.
From the Display Properties dialog box, select the Settings tab then click Advanced.
Select the NVIDIA GeForce tab.
Click the slider to display the following screen, then select the SLI multi-GPU item.

Slider

Click the Enable SLI multi-GPU check box. Click OK when done.