Asus A8n-vm csm nbp User manual

Motherboard

A8N-VM/NBP

iiii

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.

E2443E2443

E2443

Revised Edition V1Revised Edition V1

Revised Edition V1

January 2006January 2006

January 2006

iiiiii

iii

Contents

Notices ................................................................................................ vi

Safety information ............................................................................. vii

A8N-VM CSM specifications summary .............................................. viii

Chapter 1: Product introductionChapter 1: Product introduction

Chapter 1: Product introduction

1.1 Special features .................................................................... 1-2

1.1.1 Product highlights ................................................... 1-2

1.1.2 Innovative ASUS features ....................................... 1-4

1.2 Before you proceed .............................................................. 1-5

1.3 Motherboard overview .......................................................... 1-6

1.3.1 Motherboard layout ................................................ 1-6

1.3.2 Placement direction ................................................ 1-7

1.3.3 Screw holes ............................................................ 1-7

1.4 Central Processing Unit (CPU) .............................................. 1-8

1.5 System memory ................................................................. 1-10

1.5.1 Overview ............................................................... 1-10

1.5.2 Memory configurations ......................................... 1-10

1.5.3 Installing a DIMM ................................................... 1-12

1.5.4 Removing a DIMM ................................................. 1-12

1.6 Expansion slots ................................................................... 1-13

1.6.1 Installing an expansion card .................................. 1-13

1.6.2 Configuring an expansion card .............................. 1-13

1.6.3 PCI slots ................................................................ 1-15

1.6.4 PCI Express x1 slot ............................................... 1-15

1.6.5 PCI Express x16 slot ............................................. 1-15

1.7 Jumpers .............................................................................. 1-16

1.8 Connectors ......................................................................... 1-19

1.8.1 Rear panel connectors .......................................... 1-19

1.8.2 Internal connectors ............................................... 1-21

iviv

Contents

Chapter 2: BIOS setupChapter 2: BIOS setup

Chapter 2: BIOS setup

2.1 Managing and updating your BIOS ........................................ 2-2

2.1.1 Creating a bootable floppy disk .............................. 2-2

2.1.2 ASUS EZ Flash utility .............................................. 2-3

2.1.3 AFUDOS utility ........................................................ 2-4

2.1.4 ASUS Update utility ................................................ 2-6

2.2 BIOS setup program ............................................................. 2-8

2.2.1 BIOS menu screen ................................................... 2-9

2.2.2 Menu bar ................................................................. 2-9

2.2.3 Navigation keys ...................................................... 2-9

2.2.4 Menu items ........................................................... 2-10

2.2.5 Sub-menu items ................................................... 2-10

2.2.6 Configuration fields .............................................. 2-10

2.2.7 Pop-up window ..................................................... 2-10

2.2.8 Scroll bar .............................................................. 2-10

2.2.9 General help .......................................................... 2-10

2.3 Main menu .......................................................................... 2-11

2.3.1 System Time ......................................................... 2-11

2.3.2 System Date ......................................................... 2-11

2.3.3 Legacy Diskette A ................................................ 2-11

2.3.4 Primary and Secondary IDE Master/Slave;

First, Second, Third, and Fourth SATA ................. 2-12

2.3.5 IDE Configuration .................................................. 2-13

2.3.6 System Information .............................................. 2-14

2.4 Advanced menu .................................................................. 2-15

2.4.1 AMD Cool ‘n’ Quiet Configuration ......................... 2-15

2.4.2 CPU Configuration ................................................. 2-16

2.4.3 Chipset ................................................................. 2-16

2.4.4 Onboard Devices Configuration ............................ 2-22

2.4.5 PCI PnP ................................................................. 2-23

2.4.6 USB Configuration ................................................. 2-24

2.4.7 Trusted Computing ............................................... 2-25

Contents

2.5 Power menu ........................................................................ 2-26

2.5.1 ACPI Aware O/S .................................................... 2-26

2.5.2 Suspend Mode ...................................................... 2-26

2.5.3 ACPI 2.0 Support .................................................. 2-26

2.5.4 ACPI APIC Support ................................................ 2-27

2.5.5 APM Configuration ................................................ 2-27

2.5.6 Hardware Monitor ................................................. 2-28

2.6 Boot menu .......................................................................... 2-30

2.6.1 Boot Device Priority .............................................. 2-30

2.6.2 Boot Settings Configuration ................................. 2-31

2.6.3 Security ................................................................ 2-32

2.7 Exit menu ........................................................................... 2-34

vivi

Notices

Federal Communications Commission StatementFederal Communications Commission Statement

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

manufacturer’s 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.

Canadian Department of Communications StatementCanadian Department of Communications Statement

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 CanadianThis class B digital apparatus complies with Canadian

This class B digital apparatus complies with Canadian

ICES-003.ICES-003.

ICES-003.

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 user’s authority to operate

this equipment.

viivii

vii

Safety information

Electrical safetyElectrical safety

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.

Operation safetyOperation safety

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.

viiiviii

viii

A8N-VM/NBP specifications summary

(continued on the next page)

CPUCPU

CPU

ChipsetChipset

Chipset

Front Side BusFront Side Bus

Front Side Bus

MemoryMemory

Memory

Expansion slotsExpansion slots

Expansion slots

GraphicsGraphics

Graphics

StorageStorage

Storage

High DefinitionHigh Definition

High Definition

AudioAudio

Audio

LANLAN

LAN

IEEE 1394IEEE 1394

IEEE 1394

Socket 939 for AMD Athlon™ 64FX/Athlon™ 64 X2/

Athlon™ 64 processors

Supports AMD Cool ‘n’ Quiet™ Technology

Northbridge: NVIDIA

GeForce™ 6150B GPU

Southbridge: NVIDIA

nForce™430 MCP

2000/1600 MT/s

Dual-channel memory architecture

4 x 184-pin DIMM sockets support up to 4 GB of

unbufferred and non-ECC 400/333 MHz DDR

memory modules

1 x PCI Express™ x16 slot

1 x PCI Express™ x1 slot

2 x PCI slots

Integrated in the NVIDIA

GeForce™ 6150B Graphics

Processing Unit (GPU)

Dual VGA output: DVI-D, RGB

High definition video processing with maximum

resolution of 1920 x 1440 pixels for RGB display

Note:Note:

Note:

DVI-D only supports digital display. You

cannot convert DVI-D to output RGB signal to

CRT display.

NVIDIA

nForce™430 media and communications

processor (MCP) supports:

- 2 x Ultra DMA 133/100/66/33 interfaces for four

(4) hard disk drives

- 4 x Serial ATA I/Serial ATA II 3 Gb/s hard disk

drives supporting RAID 0, RAID 1, RAID 0+1, and

RAID 5 configuration

SoundMAX

ADI AD1986A 5.1-channel CODEC

Supports Jack Sensing technology

S/PDIF out interface

NVIDIA

nForce™430 built-in Gigabit MAC with external

Marvell

88E1115 PHY supports:

VIA 6307 IEEE 1394a controller supports:

- 2 x IEEE 1394a ports

ixix

A8N-VM/NBP specifications summary

USBUSB

USB

Special featuresSpecial features

Special features

BIOS featuresBIOS features

BIOS features

Rear panelRear panel

Rear panel

InternalInternal

Internal

connectorsconnectors

connectors

PowerPower

Power

RequirementRequirement

Requirement

Form FactorForm Factor

Form Factor

ManageabilityManageability

Manageability

Supports up to 8 USB 2.0 ports

ASUS Q-Fan

ASUS EZ Flash

Note:Note:

Note:

ASUS EZ Flash only support VGA/RGB output.

4 Mb Flash ROM, AMI BIOS, PnP, DMI, WfM2.0, ACPI 2.0a,

SM BIOS 2.3

1 x Parallel port

1 x IEEE 1394a port

1 x LAN (RJ-45) port

4 x USB 2.0 ports

1 x VGA/RGB Out port

1 x VGA/DVI-D port

1 x PS/2 keyboard port

1 x PS/2 mouse port

6-channel audio ports

1 x IEEE 1394a connector

1 x Front panel audio connector

1 x CD audio in connector

1 x Chassis intrusion connector

1 x Serial port connector

1 x CPU fan connector

1 x Chassis fan connector

1 x Floppy disk drive connector

1 x Primary IDE connector

1 x Secondary IDE connector

1 x S/PDIF Out connector

1 x TPM connector (optional)

1 x TPM module (optional)

4 x Serial ATA connectors

2 x USB 2.0 connectors for four additional USB 2.0 ports

24-pin ATX power connector

4-pin x ATX 12V power connector

System panel connector

ATX power supply (with 24-pin and 4-pin 12 V plugs)

ATX 12 V 2.0 compliant

uATX: 9.6 in. x 9.6 in. (24.5cm x 24.5cm)

WfM2.0, DMI 2.0, WOL by PME, WOR by PME

*Specifications are subject to change without notice.

Product

introduction

This chapter describes the motherboard

features and the new technologies

it supports.

1-21-2

1-2 Chapter 1: Product introductionChapter 1: Product introduction

Chapter 1: Product introductionChapter 1: Product introduction

Chapter 1: Product introduction

1.1 Special features

1.1.11.1.1

1.1.1 Product highlightsProduct highlights

Product highlightsProduct highlights

Product highlights

Latest processor technologyLatest processor technology

Latest processor technology

The motherboard comes with a 939-pin surface mount, Zero Insertion

Force (ZIF) socket that supports AMD

Athlon™ 64/Athlon™ 64 FX/Athlon™

64 X2 processors. With an integrated low-latency high-bandwidth memory

controller and a highly-scalable HyperTransport™ technology-based system

bus, the motherboard provides a powerful platform for your diverse

computing needs, increased office productivity, and enhanced digital media

experience. See page 1-8.

NVIDIANVIDIA

NVIDIA

®®

GeForce™ 6150 GPUGeForce™ 6150 GPU

GeForce™ 6150 GPU

and NVIDIAand NVIDIA

and NVIDIA

®®

nForce™ 430 MCP chipsetsnForce™ 430 MCP chipsets

nForce™ 430 MCP chipsets

The NVIDIA

GeForce™ 6150 graphics processing unit (GPU) Northbridge

supports Microsoft

DirectX 9.0 Shader Model 3.0, dual VGA out (RGB and

DVI-D), NVIDIA

PureVideo Technology with unprecedented integrated

video quality, TV-out, and PCI Express interface.

The NVIDIA

nForce™ 430 media and communications processor (MCP)

Southbridge delivers NVIDIA

Gigabit LAN, and NVIDIA

MediaShield storage

management technology allowing easy RAID configuration (RAID 0, RAID 1,

RAID 0+1, and RAID 5) for Serial ATA II.

Dual-channel DDR memory supportDual-channel DDR memory support

Dual-channel DDR memory support

Employing the Double Data Rate (DDR) memory technology, the

motherboard supports up to 4 GB of system memory using DDR400/333

DIMMs. The ultra-fast 400 MHz memory bus delivers the required

bandwidth for the latest 3D graphics, multimedia, and Internet applications.

See page 1-10 for details.

PCI Express™ interfacePCI Express™ interface

PCI Express™ interface

The motherboard fully supports PCI Express, the latest I/O interconnect

technology that speeds up the PCI bus. PCI Express features point-to-point

serial interconnections between devices and allows higher clockspeeds by

carrying data in packets. This high speed interface is software compatible with

existing PCI specifications. See page 1-15 for details.

ASUS A8N-VM/NBPASUS A8N-VM/NBP

ASUS A8N-VM/NBP 1-31-3

1-31-3

1-3

Serial ATA II technologySerial ATA II technology

Serial ATA II technology

The motherboard supports the Serial ATA 3 Gb/s technology through the

Serial ATA interfaces and the NVIDIA

nForce™430 MCP Southbridge. The

Serial ATA II 3 Gb/s specification provides twice the bandwidth of the

current Serial ATA products with a host of new features, including Native

Command Queueing (NCQ), and Power Management (PM) Implementation

Algorithm. Serial ATA allows for thinner, more flexible cables with lower pin

count, reduced voltage requirement. See page 1-23 for details.

The Hot Swap function is supported only in RAID mode.

S/PDIF digital sound readyS/PDIF digital sound ready

S/PDIF digital sound ready

The motherboard supports the S/PDIF Out function through the S/PDIF

interface at midboard. The S/PDIF technology turns your computer into a

high-end entertainment system with digital connectivity to powerful audio and

speaker systems. See page 1-24 for details.

USB 2.0 technologyUSB 2.0 technology

USB 2.0 technology

The motherboard implements the Universal Serial Bus (USB) 2.0

specification, dramatically increasing the connection speed from the

12 Mbps bandwidth on USB 1.1 to a fast 480 Mbps on USB 2.0. USB 2.0 is

backward compatible with USB 1.1. See pages 1-17 and 1-25 for details.

IEEE 1394a supportIEEE 1394a support

IEEE 1394a support

The IEEE 1394a interface provides high-speed and flexible PC connectivity

to a wide range of peripherals and devices compliant to IEEE 1394a

standards. The IEEE 1394a interface allows up to 400 Mbps transfer rates

through simple, low-cost, high-bandwidth asynchronous (real-time) data

interfacing between computers, peripherals, and consumer electronic

devices such as camcorders, VCRs, printers,TVs, and digital cameras. See

page 1-26 for details.

1-41-4

1-4 Chapter 1: Product introductionChapter 1: Product introduction

Chapter 1: Product introductionChapter 1: Product introduction

Chapter 1: Product introduction

1.1.21.1.2

1.1.2 Innovative ASUS featuresInnovative ASUS features

Innovative ASUS featuresInnovative ASUS features

Innovative ASUS features

ASUS EZ Flash BIOSASUS EZ Flash BIOS

ASUS EZ Flash BIOS

With the ASUS EZ Flash, you can easily update the system BIOS even

before loading the operating system. No need to use a DOS-based utility or

boot from a floppy disk. See page 2-3 for details.

ASUS A8N-VM/NBPASUS A8N-VM/NBP

ASUS A8N-VM/NBP 1-51-5

1-51-5

1-5

Onboard LEDOnboard LED

Onboard LED

The motherboard comes with a standby power LED that lights up to

indicate that the system is ON, in sleep mode, or in soft-off mode.

This is a reminder that you should shut down the system and unplug

the power cable before removing or plugging in any motherboard

component. The illustration below shows the location of the onboard

LED.

1.2 Before you proceed

Take note of the following precautions before you install motherboard

components or change any motherboard settings.

• Unplug the power cord from the wall socket before touching any

component.

• Use a grounded wrist strap or touch a safely grounded object or a

metal object, such as the power supply case, before handling

components to avoid damaging them due to static electricity

• Hold components by the edges to avoid touching the ICs on them.

• Whenever you uninstall any component, place it on a grounded

antistatic pad or in the bag that came with the component.

•Before you install or remove any component, ensureBefore you install or remove any component, ensure

Before you install or remove any component, ensureBefore you install or remove any component, ensure

Before you install or remove any component, ensure

that the ATX power supply is switched off or thethat the ATX power supply is switched off or the

that the ATX power supply is switched off or the

power cord is detached from the power supply.power cord is detached from the power supply.

power cord is detached from the power supply. Failure

to do so may cause severe damage to the motherboard, peripherals,

and/or components.

A8N-VM

A8N-VM Onboard LED

SB_PWR

Standby

Power

OFF

Powere

Off

1-61-6

1-6 Chapter 1: Product introductionChapter 1: Product introduction

Chapter 1: Product introductionChapter 1: Product introduction

Chapter 1: Product introduction

1.3.11.3.1

1.3.1 Motherboard layoutMotherboard layout

Motherboard layoutMotherboard layout

Motherboard layout

1.3 Motherboard overview

Bottom:Mic In

Center:Line Out

Top:Line In

PANEL

A8N-VM

CR2032 3V

Lithium Cell

CMOS Power

AAFP

CHASSIS

PRI_IDE

SEC_IDE

EATXPWR

COM1

24.5cm (9.6in)

CPU_FAN

Socket 939

DDR DIMM_B2 (64 bit,184-pin module)

DDR DIMM_A2 (64 bit,184-pin module)

DDR DIMM_A1 (64 bit,184-pin module)

DDR DIMM_B1 (64 bit,184-pin module)

F_USB12

IE1394_1

FLOPPY

Super

I/O

VIA

VT6307

4Mb

BIOS

PS/2KBMS

T: Mouse

B: Keyboard

LAN_USB34

ADI

1986A

PCIEX16_1

PCIEX1_1

PCI1

PCI2

Marvell

88E1115

CLRTC

USB78USB56

SATA3SATA1

SATA4SATA2

CHA_FAN

ATX12V

SB_PWR

BUZZER

DVI

PARALLEL PORT

VGA

USBPW34

USBPW12

KBPWR

USBPW78

USBPW56

SPDIF_OUT

nVIDIA

nForce™430

nVIDIA

GeForce™6150

TPM_SLOT

ASUS A8N-VM/NBPASUS A8N-VM/NBP

ASUS A8N-VM/NBP 1-71-7

1-71-7

1-7

A8N-VM

Do not overtighten the screws! Doing so can damage the motherboard.

1.3.21.3.2

1.3.2 Placement directionPlacement direction

Placement directionPlacement direction

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.

Place this side towardsPlace this side towards

Place this side towards

the rear of the chassisthe rear of the chassis

the rear of the chassis

1.3.31.3.3

1.3.3 Screw holesScrew holes

Screw holesScrew holes

Screw holes

Place eight (8) screws into the holes indicated by circles to secure the

motherboard to the chassis.

1-81-8

1-8 Chapter 1: Product introductionChapter 1: Product introduction

Chapter 1: Product introductionChapter 1: Product introduction

Chapter 1: Product introduction

1.4 Central Processing Unit (CPU)

The motherboard comes with a surface mount 939-pin Zero Insertion Force

(ZIF) socket designed for the AMD Athlon™ 64FX/AMD Athlon™ 64 /

Athlon™ 64 X2 processor.

The 128-bit-wide data paths of these processors can run applications

faster than processors with only 32-bit or 64-bit wide data paths.

Take note of the marked corner (with

gold triangle) on the CPU. This mark

should match a specific corner on the

socket to ensure correct installation.

Installing the CPUInstalling the CPU

Installing the CPU

To install a CPU.

1. Locate the 939-pin ZIF socket on the motherboard.

Gold triangle

2. Unlock the socket by pressing

the lever sideways, then lift it up

to a 90°-100° angle.

Make sure that the socket lever is lifted up to 90°-100° angle, otherwise

the CPU does not fit in completely.

Socket leverSocket lever

Socket lever

A8N-VM

A8N-VM CPU Socket 939

ASUS A8N-VM/NBPASUS A8N-VM/NBP

ASUS A8N-VM/NBP 1-91-9

1-91-9

1-9

3. Position the CPU above the

socket such that the CPU corner

with the gold triangle matches

the socket corner with a small

triangle.

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!

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.

Gold triangleGold triangle

Gold triangle

Small triangleSmall triangle

Small triangle

7. Connect the CPU fan cable to the CPU_FAN connector on the

motherboard.

Do not forget to connect the CPU fan connector! Hardware monitoring

errors can occur if you fail to plug this connector.

A8N-VM

A8N-VM CPU fan connector

CPU_FAN

GND

Rotation

+12V

1-101-10

1-10 Chapter 1: Product introductionChapter 1: Product introduction

Chapter 1: Product introductionChapter 1: Product introduction

Chapter 1: Product introduction

1.5 System memory

1.5.11.5.1

1.5.1 OverviewOverview

OverviewOverview

Overview

The motherboard comes with four 184-pin Double Data Rate (DDR) Dual

Inline Memory Modules (DIMM) sockets.

The following figure illustrates the location of the sockets:

1.5.21.5.2

1.5.2 Memory configurationsMemory configurations

Memory configurationsMemory configurations

Memory configurations

You may install 128 MB, 256 MB, 512 MB, and 1 GB unbuffered non-ECC

DDR DIMMs into the DIMM sockets using the memory configurations in this

section.

•

Installing DDR DIMMs other than the recommended configurations

may cause memory sizing error or system boot failure.

•

Install only identical (the same type and size) DDR DIMM pairs for

each channel.

•

Always install DIMMs with the same CAS latency. For optimum

compatibility, we recommend that you obtain memory modules from

the same vendor.

• Due to chipset limitation, this motherboard does not support DIMM

modules with less than or equal to 128 Mb memory chips.

• If you are installing only one DIMM module for a Single-channel

configuration, install the module on DIMM_A1 (blue slot).

ChannelChannel

Channel SocketsSockets

SocketsSockets

Sockets

Channel 1 DIMM_A1 and DIMM_B1

Channel 2 DIMM_A2 and DIMM_B2

A8N-VM

A8N-VM 184-pin DDR DIMM sockets

DIMM_A2

DIMM_A1

DIMM_B2

DIMM_B1

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