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Asus A7V8X Manual

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Asus A7V8XASUS A7V8X-X - motherboard - ATX - KT400 - Socket A

ATA-133, 0 MB / 3 GB (max), DDR SDRAM, VIA VT8235 - 5.1 surround, 4 x USB

Packed with the industry's leading technologies, the ASUS A7V8X-X delivers excellent performance for Socket A processors. Leveraging the KT400 chipset, the motherboard supports Athlon XP on 333MHz FSB, AGP 8X interface, DDR 400 memory, S/PDIF digital audio for cost- and value-oriented users.
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Asus A7V8X X MOBO RM99 call 0163631063


User reviews and opinions

Comments to date: 1. Page 1 of 1. Average Rating:
bamasurface 12:07pm on Tuesday, July 20th, 2010 
this is a good board, the only problem now is that compared to by Barton 2500 MY P3 DELL IS SO SLOW very stable board, you wont regret it.

Comments posted on are solely the views and opinions of the people posting them and do not necessarily reflect the views or opinions of us.




A7V8X-LA Kamet 2

User Guide


A7V8X-LA specification summary.. iv 1. Motherboard layout.. 1 2. Central Processing Unit (CPU).. 2 Installing the CPU... 2 3. System memory.. 3 Installing a DIMM.. 3 4. Expansion slots... 4 Standard interrupt assignments.. 4 IRQ assignments for this motherboard.. 4 PCI slots... 5 AGP slot... 5 5. Jumpers... 6 6. Connectors... 8


Product Name: Manual Revision: Release Date:
A7V8X-LA E1204 V1 September 2003
A7V8X-LA specification summary
CPU Chipset Front Side Bus (FSB) Memory Socket A for AMD Athlon/AthlonXP 3000+ processor Barton core support VIA KM400 VIA VT8237 333/266MHz 2 x 184-pin DDR DIMM sockets support up to maximum 2GB unbuffered PC2700/2100/1600 non-ECC DDR SDRAM memory 3 x PCI 1 x AGP 8X/4X (1.5V) 2 x UltraDMA100 IDE connectors 2 x Serial ATA connectors Integrated VIA UniChrome Graphics Realtek ALC658 6-channel AUDIO CODEC Digital audio via an S/PDIF out interface Southbridge integrated 10/100 Mbps LAN controller and VT6103 LAN PHY VIA VT6307 supports two IEEE 1394 ports Super I/O integrated monitoring of CPU/chassis fan and MB/CPU temperature 1 x Parallel 1 x Serial 1 x PS/2 Keyboard 1 x PS/2 Mouse 1 x RJ45 port 1 x Audio I/O 1 x VGA port 1 x IEEE 1394 port 4 x USB 2.0/1.x USB connectors support additional 4 USB 2.0 ports 1 x IEEE 1394 connector for an additional IEEE 1394 port CPU/chassis fan connectors 20-pin ATX power connector Front panel connector CD/AUX connectors Front panel audio connector S/PDIF out connector (Continued next page)
Expansion slots Storage Integrated Graphics Audio LAN IEEE 1394 Hardware Monitoring Rear Panel I/O Ports

Internal I/O Connectors

BIOS features Industry standard Manageability Support CD contents 4Mb Flash ROM, Award BIOS, Enhanced ACPI, DMI2.0, Green, PnP features PCI 2.2, USB 2.0/1.1 WOL, WOR, Wake on KB, Wake on PS/2 mouse Device drivers ASUS PC Probe ASUS Screensaver Award BIOS Flash Utility Microsoft Direct X Adobe Acrobat Reader Trend Micro PC-cillin 2002 User Guide ASUS A7V8X-LA support CD UltraDMA cable FDD cable I/O shield Micro-ATX form factor: 9.6 in x 9.6 in


Form Factor
* Specifications are subject to change without notice

1. Motherboard layout

24.5cm (9.6in)
PS/2KBMS T: Mouse B: Keyboard COM1

Socket 462



DDR DIMM1 (64 bit,184-pin module)
DDR DIMM2 (64 bit,184-pin module)
VGA ATX12V Bottom: T:USB1 Top: B:USBCHA_FAN USB2.0 Top: T: USB3 RJ-45 B: USB4
Top:Line In Center:Line Out Below:Mic In



VIA VT6307

Accelerated Graphics Port (AGP1)

VIA VT6103




Super I/O



4MB Flash ROM


ASUS A7V8X-LA Motherboard




ATX Power Connector


2. Central Processing Unit (CPU)
The motherboard comes with a Socket A (462) for the AMD processor. AMD processors offer gigahertz speeds to support all latest computing platforms and applications. The A7V8X-LA supports AMD Athlon/Athlon XP 3000+ processors. This motherboard also supports 333/266MHz front side bus (FSB), and allows data transfers of up to 2.7GB/s with PC2700 DDR. Each AMD CPU has a marked corner. This corner is usually indicated with a notch and/or a golden square or triangle. Refer to this indicator while orienting the CPU. A fan and a heatsink should be attached to the CPU to prevent overheating.




A7V8X-LA (KAMET2) Socket 462

Installing the CPU

Follow these steps to install a CPU. 1. Locate the Socket 462 and open it by pulling the lever gently sideways away from the socket. Then lift the lever upwards. The socket lever must be fully opened (90 to 100 degrees). 2. Insert the CPU with the correct orientation. The notched or golden corner of the CPU must be oriented toward the inner corner of the socket base nearest to the lever hinge.
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!

3. System memory

The motherboard comes with two Double Data Rate (DDR) Dual Inline Memory Module (DIMM) sockets. These sockets support up to 2GB system memory using 184-pin unbuffered non-ECC PC2700/PC2100/PC1600 double-sided DDR DIMMs. The following figure illustrates the location of the DDR DIMM sockets.

80 Pins

104 Pins
A7V8X-LA (KAMET2) 184-Pin DDR DIMM Sockets
CAUTION: DIMMs are keyed to fit with only one direction. DO NOT force a DIMM into a socket to avoid damaging the DIMM.

Installing a DIMM

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

4. Expansion slots

The motherboard has three PCI slots and one Accelerated Graphics Port (AGP) slot. 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. 3. Assign an IRQ to the card. Refer to the tables below. 4. Install the drivers and/or software applications for the expansion card according to the card documentation.
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 Sound Card (sometimes LPT2) Floppy Disk Controller 7* 15 Printer Port (LPT1) System CMOS/Real Time Clock 9* 4 ACPI Mode when used 10* 5 IRQ holder for PCI steering 11* 6 IRQ holder for PCI steering 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

PCI slot 1 PCI slot 2 PCI slot 3 AGP slot Onboard 1394 controller A shared shared B shared C shared D shared

PCI slots

There are three (3) 32-bit PCI slots on this motherboard. The slots support PCI cards such as a LAN card, SCSI card, USB card, and other cards that comply with PCI specifications. The figure below shows a typical PCI card installed into a slot.

AGP slot

This motherboard has an Accelerated Graphics Port (AGP) slot that supports AGP 8X/4X cards. When you buy an AGP card, make sure that you ask for one with +1.5V specification. Note the notches on the card golden fingers to ensure that they fit the AGP slot on your motherboard.
Install only +1.5V AGP cards on this motherboard!

Keyed for 1.5v

A7V8X-LA (KAMET2) Accelerated Graphics Port (AGP)

5. Jumpers

1. Clear CMOS (3-pin CLRTC) This jumper allows you to clear the RAM data in CMOS, except the system date and time. The RAM data in CMOS, is powered by the onboard button cell battery. To erase the CMOS RAM: 1. Turn OFF the computer and unplug the power cord. 2. Move the jumper cap from pins 2-3 (Default) to pins 1-2 (Clear CMOS). Keep the cap on pins 1-2 for about 5~10 seconds, then move the cap back to pins 2-3. 3. Plug the power cord and turn ON the computer. 4. Hold down the <F1> key during the boot process and enter the BIOS setup to re-enter data.
Except when clearing the CMOS RAM, never remove the jumper cap on CLRTC jumper default position. Removing the cap will cause system boot failure!

Clear CMOS

Normal (Default)
2. Clear Password (3-pin CLPWD) This jumper allows you to clear the BIOS setup password. To erase the BIOS setup password: 1. Turn OFF the computer and unplug the power cord. 2. Move the jumper cap from pins 2-3 (Default) to pins 1-2 (Clear Password). Keep the cap on pins 1-2 for about 5~10 seconds, then move the cap back to pins 2-3. 3. Plug the power cord and turn ON the computer. 4. Hold down the <F1> key during the boot process and enter the BIOS setup to set a new password.

Clear Password

A7V8X-LA (KAMET2) Clear Password Setting

6. Connectors

This section describes and illustrates the internal connectors on the motherboard. 1. Floppy disk drive connector (34-1 pin FLOPPY) This connector supports the provided floppy drive ribbon cable. After connecting one end to the motherboard, connect the other end to the floppy drive. (Pin 5 is removed to prevent incorrect insertion when using ribbon cables with pin 5 plug.)
NOTE: Orient the red markings on the floppy ribbon cable to PIN 1.
A7V8X-LA (KAMET2) Floppy Disk Drive Connector
2. 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.
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.


+12.0VDC +5VSB PWR_OK COM +5.0VDC COM +5.0VDC COM +3.3VDC +3.3VDC


+12V DC +5.0VDC GND +5.0VDC -5.0VDC COM COM COM PS_ON# COM -12.0VDC +3.3VDC
A7V8X-LA (KAMET2) ATX Power Connectors
3. IDE connectors (40-1 pin PRIMARY_IDE, SECONDARY_IDE) This connector supports the provided UltraDMA 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 UltraDMA100 device (hard disk drive) and the black connector to the UltraDMA100 master device. It is recommended that you connect non-UltraDMA100 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 UltraDMA100 devices, purchase another UltraDMA 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.

1. 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. The hole near the blue connector on the UltraDMA cable is intentional.
NOTE: Orient the red markings (usually zigzag) on the IDE ribbon cable to PIN 1.
A7V8X-LA (KAMET2) IDE Connectors
4. CPU and Chassis Fan Connectors (3-pin CPU_FAN, CHA_FAN) The fan connectors support cooling fans of 350mA~740mA (8.88W max.) or a total of 1A~2.22A (26.64W max.) at +12V. Connect the fan cables to the fan connectors on the motherboard, making sure that the black wire of each cable matches the ground pin of the connector.
Do not forget to connect the fan cables to the fan connectors. Lack of sufficient air flow within the system may damage the motherboard components. These are not jumpers! DO NOT place jumper caps on the fan connectors!

Rotation +12V GND


GND +12V Rotation

A7V8X-LA (KAMET2) Fan Connectors
5. Internal audio connectors (4-pin AUX-IN, CD-IN) These connectors allow you to receive stereo audio input from sound sources such as a CD-ROM, TV tuner, or MPEG card.

AUX-IN (White)

CD-IN (Black)
A7V8X-LA (KAMET2) Internal Audio Connectors
Aux-L Audio Jack detect AGND Aux-R Audio
6. USB headers (10-1 pin FRONT_USB1) 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 a USB module to the USB header.




A7V8X-LA (KAMET2) USB Connectors
7. S/PDIF out connector (3-pin SPDI/F) This connector is for an S/PDIF audio module that allows digital instead of analog sound output. Connect one end of the audio cable to this connector and the other end to the S/PDIF module.

A7V8X-LA (KAMET2) S/PDIF Connector


8. IEEE 1394 connector (10-1 pin FRONT_1394) This connector is for a 10-to-6-pin 1394 serial connector cable that connects to a 1394 module. Attach the 10-1 pin cable plug to this connector, and the 6-pin cable plug to the 1394 module. You may also connect a 1394-compliant internal hard disk to this connector.
NEVER connect a USB cable to any of the IEEE 1394 connectors. Doing so will damage the motherboard!
FRONT_1394 A7V8X-LA (KAMET2) IEEE 1394 Connector
The IEEE 1394 module is purchased separately.


9. Front audio connector (10-1 pin FRONT_AUDIO) This connector is for a chassis-mounted front panel headphone and MIC-IN jack.
A7V8X-LA (KAMET2) Front HeadPhone and MIC-IN Connector


10. Serial ATA connectors (7-pin SATA2, SATA1) These next generation connectors support the thin Serial ATA cables for Serial ATA hard disks. The current Serial ATA interface allows up to 150 MB/s data transfer rate, faster than the standard parallel ATA with 133MB/s (Ultra ATA133).
A7V8X-LA (KAMET2) SATA Connectors
Important notes on Serial ATA The Serial ATA cable is smaller and more flexible allowing easier routing inside the chassis. The lower pin count of the Serial ATA cable eliminates the problem caused by the wide, flat ribbon cables of the Parallel ATA interface. Hot plug support for Serial ATA drive and connections are not available in this motherboard. Adjust the necessary BIOS settings when using the Serial ATA interface. Install Windows XP Service Pack 1 when using Serial ATA.
11. System panel connector (10-1 pin FRONT_PANEL) This connector accommodates several system front panel functions.

Power LED

Power Button


A7V8X-LA (KAMET2) Front Panel Connector
System Power LED Lead (2-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.
Hard Disk Activity LED Lead (2-pin HDLED) This 2-pin connector is for the HDD LED cable. The read or write activities of the device connected to the any of IDE connectors cause the IDE LED to light up.
ATX Power Switch / Soft-Off Switch Lead (2-pin PWRBTN) 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.
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.



Technical specifications

Product TypeMotherboard
Form FactorATX
Width12 in
Depth9.6 in
Compatible ProcessorsAthlon, Duron, Athlon XP
Processor SocketSocket A
Chipset TypeVIA Apollo KT400
Max Bus Speed333 MHz
Storage ControllerATA-133
Installed Qty (Max Supported)0 ( 1 )
Supported RAM TechnologyDDR SDRAM
Supported RAM (Registered or Buffered)Unbuffered
RAM Installed ( Max )0 MB / 3 GB (max)
Supported RAM SpeedPC2100, PC1600, PC2700, PC3200
Audio OutputSound card
Signal ProcessorVIA VT8235
Sound Output Mode5.1 channel surround
Telecom / Networking
NetworkingNetwork adapter - Ethernet, Fast Ethernet
BIOS FeaturesDMI 2.0 support, WfM 2.0 support, ASUS MyLogo, JumperFree, SMBIOS 2.3 support, ASUS EZ Flash
Hardware MonitoringCPU overheating protection
Sleep / Wake UpKeyboard wake up, wake on modem (WOM), suspend to RAM (STR), wake on LAN (WOL), mouse wake up, wake on PCI device, wake on ring (WOR)
Hardware FeaturesChassis intrusion detection, CrashFree BIOS, C.P.R. (CPU Parameter Recall)
Expansion / Connectivity
Expansion Slot(s)1 ( 1 ) x processor - Socket A 1 ( 1 ) x AGP 8x ( 1.5 V ) 3 ( 3 ) x memory - DIMM 184-pin 6 ( 6 ) x PCI
Storage InterfacesATA-133 - connector(s): 2 x 40pin IDC
Interfaces4 x Hi-Speed USB - 4 pin USB Type A 1 x parallel - IEEE 1284 (EPP/ECP) - 25 pin D-Sub (DB-25) 1 x serial - RS-232 - 9 pin D-Sub (DB-9) 1 x mouse - generic - 6 pin mini-DIN (PS/2 style) 1 x keyboard - generic - 6 pin mini-DIN (PS/2 style) 1 x storage - floppy interface - 34 pin IDC 1 x network - Ethernet 10Base-T/100Base-TX - RJ-45 1 x audio - line-in - mini-phone stereo 3.5 mm 1 x audio - line-out - mini-phone stereo 3.5 mm 1 x microphone - input - mini-phone mono 3.5 mm 1 x audio - SPDIF 2 x audio - line-in - 4 pin MPC
Cables Included1 x IDE cable 1 x floppy cable
Software IncludedDrivers & utilities, ASUS PC Probe, ASUS MyLogo, Adobe Acrobat Reader 5.0, ASUS EZ Flash, PC-cillin 2002
Compliant StandardsPlug and Play
Universal Product Identifiers
Part Numbers90-M7A690-W0EAY, A7V8X-X
GTIN00610839110476, 04719543110478



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