AOpen MX4LR User Manual

Download

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<MX4LR

DOC. NO.: MX4LR-OL-E0203A

Overview

Installation

Hardware

Drivers &

Utilities

BIOS Setup

AWARD

Glossary

Troubleshooting &

Technical Support

MMXX44LLRR OOnnlliinnee MMaannuuaall

WWhhaatt’’ss iinn tthhiiss mmaannuuaall

<MX4LR ........................................................................................................................................ 1

What’s in this manual ......................................................................................................................................................2

You Must Notice ..............................................................................................................................................................9

Before You Start ............................................................................................................................................................10

Overview .......................................................................................................................................................................11

Feature Highlight ...........................................................................................................................................................12

Quick Installation Procedure..........................................................................................................................................16

Motherboard Map ..........................................................................................................................................................17

Block Diagram ...............................................................................................................................................................18

Hardware Installation ................................................................................................................19

About “Optional” and “Upgrade Optional”… ...................................................................................................................20

JP14 Clear CMOS Data.................................................................................................................................................21

CPU Installation .............................................................................................................................................................22

CPU Jumper-less Design...............................................................................................................................................25

Full-range Adjustable CPU Core Voltage .......................................................................................................................27

CPU and System Fan Connector (with H/W Monitoring) ................................................................................................29

JP28 Keyboard/Mouse Wake-up Enable/Disable Jumper ..............................................................................................30

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DIMM Sockets ...............................................................................................................................................................31

Front Panel Connector ..................................................................................................................................................33

ATX Power Connector ...................................................................................................................................................34

AC Power Auto Recovery ..............................................................................................................................................35

IDE and Floppy Connector ............................................................................................................................................36

IrDA Connector..............................................................................................................................................................38

S/PDIF (Sony/Philips Digital Interface) Connector .........................................................................................................39

ADD (AGP Digital Display) Slot .....................................................................................................................................40

WOM (Zero Voltage Wake on Modem) Connector .........................................................................................................41

WOM by External BOX Modem......................................................................................................................................42

WOM by Internal Modem Card ......................................................................................................................................43

WOL (Wake on LAN) .....................................................................................................................................................44

CNR (Communication and Network Riser) Expansion Slot ............................................................................................46

PC99 Color Coded Back Panel......................................................................................................................................47

Support 10/100 Mbps LAN onboard...............................................................................................................................48

Support 2nd and 3rd USB2.0 Ports ..................................................................................................................................49

Chassis Intrusion Connector..........................................................................................................................................50

CD Audio Connector ......................................................................................................................................................51

AUX-IN Connector .........................................................................................................................................................52

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Front Audio Connector...................................................................................................................................................53

Battery-less and Long Life Design .................................................................................................................................54

CPU Over-current Protection .........................................................................................................................................55

Hardware Monitoring .....................................................................................................................................................56

Resettable Fuse ............................................................................................................................................................57

2200µF Low ESR Capacitor...........................................................................................................................................58

Layout (Frequency Isolation Wall) .................................................................................................................................59

Enlarged Aluminum Heatsink .........................................................................................................................................60

Driver and Utility........................................................................................................................61

Auto-run Menu from Bonus CD Disc..............................................................................................................................62

Installing Intel® Chipset Software Installation Utility ......................................................................................................63

Intel VGA driver .............................................................................................................................................................64

Installing Intel IAA Driver ...............................................................................................................................................65

Installing Onboard Sound Driver....................................................................................................................................66

Installing LAN Driver......................................................................................................................................................67

Installing USB2.0 Driver ................................................................................................................................................68

Installing Hardware Monitoring Utility ............................................................................................................................70

ACPI Suspend to Hard Drive ..........................................................................................................

ACPI Suspend to RAM (STR).........................................................................................................

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AWARD BIOS....................................................................................................78

About BIOS Function Description…................................................................................................

How To Use Award™ BIOS Setup Program....................................................................................

How To Enter BIOS Setup ..............................................................................................................

BIOS Upgrade under Windows environment...................................................................................

Overclocking....................................................................................................85

VGA Card & Hard Disk ...................................................................................................................

Glossary...........................................................................................................87

AC97 ..............................................................................................................................................

ACPI (Advanced Configuration & Power Interface).........................................................................

AGP (Accelerated Graphic Port).....................................................................................................

AMR (Audio/Modem Riser).............................................................................................................

AOpen Bonus Pack CD ..................................................................................................................

APM (Advanced Power Management) ............................................................................................

ATA (AT Attachment).......................................................................................................................

ATA/66............................................................................................................................................

ATA/100..........................................................................................................................................

ATA/133..........................................................................................................................................

BIOS (Basic Input/Output System) .................................................................................................

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Bus Master IDE (DMA mode)..........................................................................................................

CNR (Communication and Networking Riser).................................................................................

CODEC (Coding and Decoding) .....................................................................................................

DDR (Double Data Rated) SDRAM.................................................................................................

DIMM (Dual In Line Memory Module) ............................................................................................91

DMA (Direct Memory Access).........................................................................................................

ECC (Error Checking and Correction).............................................................................................

EDO (Extended Data Output) Memory............................................................................................

EEPROM (Electronic Erasable Programmable ROM)....................................................................92

EPROM (Erasable Programmable ROM)........................................................................................

EV6 Bus .........................................................................................................................................

FCC DoC (Declaration of Conformity).............................................................................................

FC-PGA (Flip Chip-Pin Grid Array) .................................................................................................

Flash ROM .....................................................................................................................................

FSB (Front Side Bus) Clock............................................................................................................

I2C Bus ...........................................................................................................................................

IEEE 1394 ......................................................................................................................................

Parity Bit.........................................................................................................................................

PBSRAM (Pipelined Burst SRAM) ..................................................................................................

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PC-100 DIMM.................................................................................................................................

PC-133 DIMM.................................................................................................................................

PC-1600 or PC-2100 DDR DRAM ..................................................................................................

PCI (Peripheral Component Interface) Bus.....................................................................................

PDF Format....................................................................................................................................

PnP (Plug and Play) .......................................................................................................................

POST (Power-On Self Test)............................................................................................................

RDRAM (Rambus DRAM)...............................................................................................................

RIMM (Rambus Inline Memory Module)..........................................................................................

SDRAM (Synchronous DRAM) .......................................................................................................

Shadow E2PROM ...........................................................................................................................

SIMM (Single In Line Memory Module)...........................................................................................

SMBus (System Management Bus) ................................................................................................

SPD (Serial Presence Detect) ........................................................................................................

Ultra DMA.......................................................................................................................................

USB (Universal Serial Bus).............................................................................................................

VCM (Virtual Channel Memory) ......................................................................................................

ZIP file............................................................................................................................................

Troubleshooting...............................................................................................100

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Technical Support............................................................................................104

Product Registration .......................................................................................107

How to Contact Us...........................................................................................108

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YYoouu MMuusstt NNoottiiccee

Adobe, the Adobe logo, Acrobat is trademarks of Adobe Systems Incorporated.

AMD, the AMD logo, Athlon and Duron are trademarks of Advanced Micro Devices, Inc.

Intel, the Intel logo, Intel Celeron, Pentium II, Pentium III are trademarks of Intel Corporation.

Microsoft, Windows, and Windows logo are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.

All product and brand names used on this manual are used for identification purposes only and may be the registered trademarks of their respective owners.

All of the specifications and information contained in this manual are subject to change without notice. AOpen reserves the right to revise this publication and to make reasonable changes. AOpen assumes no responsibility for any errors or inaccuracies that may appear in this manual, including the products and software described in it.

This documentation is protected by copyright law. All rights are reserved. No part of this document may be used or reproduced in any form or by any means, or stored in a database or retrieval system without prior written permission from AOpen Corporation. Copyright© 1996-2002, AOpen Inc. All Rights Reserved.

MMXX44LLRR OOnnlliinnee MMaannuuaall

BBeeffoorree YYoouu SSttaarrtt

This Online Manual will introduce to the user how this product is installed. All useful information will be described in later

chapters. Please keep this manual carefully for future upgrades or system configuration changes. This Online Manual is saved

in PDF format

get free download from Adobe web site

Although this Online Manual is optimized for screen viewing, it is still capable for hardcopy printing, you can print it by A4 paper

size and set 2 pages per A4 sheet on your printer. To do so, choose File > Page Setup and follow the instruction of your printer

driver.

Thanks for the help of saving our earth.

, we recommend using Adobe Acrobat Reader 4.0 for online viewing, it is included in Bonus CD disc or you can

MMXX44LLRR OOnnlliinnee MMaannuuaall

OOvveerrvviieeww

Thank you for choosing AOpen MX4LR motherboard. The MX4LR is Intel® Socket 478 motherboard (M/B) based on the ATX

form factor featuring the Intel® 845GL(Brookdale) chipset

motherboard can support Intel

different customer’s requirements, the Intel 845GL chipset memory interface supports DDR266 SDRAM devices with densities of

64, 128, 256, 512Mb DDR SDRAM DIMM modules and the maximum memory size can be up to 2 GB. The onboard IDE

controller supports Ultra DMA

advantage of the Communication and Network Riser (CNR)

a single baseboard design. Besides, the MX4LR has an AC97

chipset onboard, providing high performance and magic surround

stereo sound to let people enjoy working with it. Now, let’s enjoy

all features from AOpen MX4LR motherboard.

Socket 478 Pentium® 4 (Brookdale) and 400 MHz Front Side Bus (FSB) clock. According to

33/66/100 mode and the transfer rate up to 100MB/s. Further flexibility can be achieved by taking

. As high performance chipset built in the M/B, the MX4LR

card option that allows audio, modem, and/or LAN configuration on

CODEC

MMXX44LLRR OOnnlliinnee MMaannuuaall

FFeeaattuurree HHiigghhlliigghhtt

CPU

Supports Intel® Socket 478 Pentium® 4 (Brookdale) 1.4GHz~2.4GHz+ with 400MHz Front Side Bus (FSB) designed for Socket

478 technology.

Chipset

With the Intel® 845GL (Brookdale) chipset, Intel delivers a discrete graphics solution with all the performance, innovative

features and proven reliability of the Intel

Multiplexed Intel DVO Port for Intel

Controller Hub (ICH4) features USB controllers supporting six USB2.0 ports. With support for AC’97 audio and the ability to

make the most of soft audio/modem technology, the 845GL chipset delivers an ideal solution for innovative new form factors.

845GL chipset. With its highly scalable design, the new 845GL chipset offers an ideal

Pentium® 4 processor platforms. And the smart integration in the Intel 845GL chipset's I/O

Expansion Slots

Including six 32-bit/33MHz PCI, one CNR and one Multiplexed Intel DVO Port. The PCI local bus throughput can be up to

132MB/s. The Communication & Nectworking Riser (CNR)

Modem/Audio card. The Multiplexed Intel DVO Port specification provides a new level of video display sophistication and speed

which supports DVI/TV-Out add-on card. Of three PCI slots provided, all of them are master PCI slots with arbitration and

decoding for all integrated functions and LPC bus.

slot provided from MX4LR can support CNR interface for a

Memory

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Provides two 184-pin DDR SDRAM DIMM sockets that support up to 2GB of PC-266 compliant DDR SDRAM (Synchronous

Dynamic Random Access Memory). You may install 64, 128, 256, 512Mb DDR SDRAM DIMM modules into each socket.

Ultra DMA 33/66/100 Bus Master IDE

Comes with an on-board PCI Bus Master IDE controller with two connectors that supports four IDE devices in two channels,

supports Ultra DMA

33/66/100, PIO Modes 3 and 4 and Bus Master IDE DMA Mode 5, and supports Enhanced IDE devices.

On-board AC’97 Sound

MX4LR uses the AC97 sound chip. This on-board audio includes a complete audio recording and playback system.

1MHz Stepping Frequency Adjustment

Provides “1MHz Stepping Frequency Adjustment” function in the BIOS. This magic function allows you adjust FSB frequency

from 100~248 by 1MHz stepping adjustment, and lets your system can get maximum performance.

Watch Dog Timer

Includes AOpen “Watch Dog Timer” function that can auto-reset default settings in 4.8 seconds when you fail to system

overclocking.

MMXX44LLRR OOnnlliinnee MMaannuuaall

S/PDIF Connectors

S/PDIF (Sony/Philips Digital Interface) is a newest audio transfer file format, which provides impressive quality through optical

fiber and allows you to enjoy digital audio instead of analog audio.

Six USB2.0 Connectors

Provides three ports, six USB connectors for USB interface devices, such as mouse, keyboard, modem, scanner, etc.

AGP Protection Technology

With AGP Protection Technology implemented, this motherboard will automatically detect the voltage of AGP card and prevent

your chipsets from being burnt out.

Power Management/Plug and Play

Supports the power management function that confirms to the power-saving standards of the U.S. Environmental Protection

Agency (EPA) Energy Star program. It also offers Plug-and-Play

making the system much user-friendlier.

, which helps save users from configuration problems, thus

Hardware Monitoring Management

Supports CPU or system fans status, temperature and voltage monitoring and alert, through the on-board hardware monitor

module.

MMXX44LLRR OOnnlliinnee MMaannuuaall

Enhanced ACPI

Fully implement the ACPI standard for Windows® 98/ME/2000 series compatibility, and supports Soft-Off, STR (Suspend to RAM,

S3), STD (Suspend to Disk, S4) features.

Super Multi-I/O

Provides two high-speed UART compatible serial ports and one parallel port with EPP and ECP capabilities. UART can also be

directed from COM1 to the Infrared Module for the wireless connections.

MMXX44LLRR OOnnlliinnee MMaannuuaall

QQuuiicckk IInnssttaallllaattiioonn PPrroocceedduurree

This page gives you a quick procedure on how to install your system. Follow each step accordingly.

Installing CPU and Fan

Installing System Memory (DIMM)

Connecting Front Panel Cable

Connecting IDE and Floppy Cable

Connecting ATX Power Cable

Connecting Back Panel Cable

Power-on and Load BIOS Setup Default

Setting CPU Frequency

Reboot

10.

Installing Operating System (such as Windows 98)

11.

Installing Driver and Utility

(

MMXX44LLRR OOnnlliinnee MMaannuuaall

Front Audio Connecto

FAN2 Connector

Green: AUX-IN Connecto

Black: CD-IN Connector

Realtek RTL8100BL

Onboard AC’97 CODEC

S/PDIF Connecto

CNR Expansion Slot

32-bit PCI Expansion Slot x3

IrDA Connector

WOM Connector

2nd & 3rd USB Connector

WOL Connector

JP14 CMOS Clear Jumper

FAN3 Connecto 4Mbit Flash ROM

Intrusion Detecto

Front Panel Connecto

TA/33/66/100

IDE Connector x2

Motherboard Map

PC99 Colored Back Panel

Resettable Fuse

JP28 Mouse/Keyboard Wakeup

COM2 Connector

4-pin 12V. ATX Power Connector

2200

F Low ESR Capacitors

DD Slot

for ADD card only)

478-pin CPU socket with Voltage and Frequency Auto-detection that supports Intel

1.4~2.4GHz+ CPU

Iintel 845GL chipset

CPU Fan Connector w Monitoring Function

184-pin DIMMx2 supports DDR266 (Max. to 2GB)

TX Power Connector

FDD Connector

Pentium® 4

ith H/W

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BBlloocckk DDiiaaggrraamm

Socket 478

Intel

Pentium 4

CPU

ADD Slot

400MHz System

Bus

LAN connect Component

Floppy Disk Drive x2

PC-266 DDR SDRAM

Up to 2GB

DIMM Socket x2

Intel 845GL

GMCH

USB2.0

Connector x6

PCI Bus

Realtek

RTL8100BL

1stUSB Port

2ndUSB Port

3rdUSB Port

32-bit PCI Slot x3

ATA

33/66100

Primary Channel

Secondary

Channel

Intel ICH4

Low Pin

Count Super

I/O

AC97

CODEC

AC Link

Firmware Hub

4Mbit Flash EEPROM

Parallel P ort

Serial Port x2

IDE D rive x4

CNR Slot

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HHaarrddwwaarree IInnssttaallllaattiioonn

This chapter describes jumpers, connectors and hardware devices of this motherboard.

Note: Electrostatic discharge (ESD) can damage your processor, disk drives, expansion boards, and

other components. Always observe the following precautions before you install a system component.

1. Do not remove a component from its protective packaging until you are ready to install it.

2. Wear a wrist ground strap and attach it to a metal part of the system unit before handling a

component. If a wrist strap is not available, maintain contact with the system unit throughout any

procedure requiring ESD protection.

MMXX44LLRR OOnnlliinnee MMaannuuaall

AAbboouutt ““OOppttiioonnaall”” aanndd ““UUppggrraaddee OOppttiioonnaall””……

When you read this online manual and start to assemble your computer system, you may find some of functions are called

“Optional”, and some are called “Upgrade Optional”. Though all AOpen motherboards include many amazing and powerful

features, in some situations, these powerful features are not used to every user. Hence, we changed some key features as

“Optional” for you to choose. Some optional functions that can be upgraded by users, we call them “Upgrade Optional”. As for

those optional functions that can’t be upgraded by ourselves, we call them “Optional”. If needed, you can contact our local

distributors or resellers for purchasing “Upgrade Optional” components, and again you can visit AOpen official web site:

www.aopen.com

for more detail information.

(

)

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JJPP1144 CClleeaarr CCMMOOSS DDaattaa

You can clear CMOS to restore system default setting. To clear the CMOS, follow the procedure below.

1. Turn off the system and unplug the AC power.

2. Remove ATX power cable from connector PWR2.

3. Locate JP14 and short pins 2-3 for a few seconds.

4. Return JP14 to its normal setting by shorting pins 1 & pin2.

5. Connect ATX power cable back to connector PWR2.

Pin 1

Normal

default

Clear

CMOS

Tip: When should I Clear CMOS?

1. Boot fail because of overclocking…

2. Forget password…

3. Troubleshooting…

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CCPPUU IInnssttaallllaattiioonn

This motherboard supports Intel® Pentium 4 Socket 478 series CPU (Brookdale). Be careful of CPU orientation when you plug it

into CPU socket.

1. Pull up the CPU socket lever and

up to 90-degree angle.

2. Locate Pin 1 in the socket and look for a cut edge on the CPU upper interface. Match Pin 1 and cut edge, then insert the CPU into the socket.

Note: These pictures are for example only, it may not exactly be the same motherboard.

CPU socket

Lever

CPU pin 1 and

cut edge

CPU cut edge

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3. Press down the CPU socket lever and finish CPU installation.

Note: This picture is for example only, it may not exactly be the same motherboard.

CPU cut edge

Note: If you do not match the CPU

socket Pin 1 and CPU cut edge well, it

damage the CPU.

Note: This socket supports

Micro-FC-PGA2 package CPU, which

is the latest CPU package developed

by Intel. Other forms of CPU package

are impossible to be fitted in.

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CCPPUU FFaann IInnssttaallllaattiioonn

This motherboard comes with a retention module attached on the CPU socket when shipped, we strongly recommend you to

install AOpen special designed CPU Fan as shown below on the retention module for better heat dissipation. Please install the

CPU Fan correctly as the following pictures shown.

1. Gently put the CPU Fan down on the

retention module with clips aligning correctly to the four corners.

2. Pressing down the four clips with force one by one on the retention module.

Clip

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CCPPUU JJuummppeerr--lleessss DDeessiiggnn

CPU VID signal and SMbus clock generator provide CPU voltage auto-detection and allows the user to set the CPU frequency

through the BIOS setup

designs are eliminated. There will be no worry of wrong CPU voltage detection.

, therefore no jumpers or switches are used. The disadvantages of the Pentium based jumper-less

Intel® Socket 478

Pentium 4 CPU

CPU VID signal

Power Regulator

(Automatically generates CPU voltage)

CPU Freq. Ratio

CPU voltage

Clock

Generator

BIOS

Controlled

Circuit

MMXX44LLRR OOnnlliinnee MMaannuuaall

AAOOppeenn ““WWaattcchh DDoogg TTiimmeerr””

With this motherboard, AOpen provides a very special, useful feature for overclockers. When you power-on the system, the

BIOS will check last system POST

the CPU FSB

reset the system to reboot in five seconds. Then, BIOS will detect the CPU’s default frequency and POST again. With this

special feature, you can easily overclock your system to get higher system performance, and without removing the cover of

system housing to set the jumper to clear CMOS data when your system hanged.

frequency by user’s setting that stored in the BIOS. If system failed in BIOS POST, the “Watch Dog Timer” will

AOpen

Watch Dog

Timer

status. If it succeeded, the BIOS will enable “Watch Dog Timer” function immediately, and set

Enable/Disable Signal

from BIOS

Countdown about

5 seconds if fails

in POST

Reset Signal

Clock Generator

BIOS

CPU ID Signal

CPU

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FFuullll--rraannggee AAddjjuussttaabbllee CCPPUU CCoorree VVoollttaaggee

This function is dedicated to overclockers and supports Adjustable CPU Core Voltage from 1.10V to 1.85V. But this motherboard

can also automatically detects CPU VID signal and generates proper CPU core voltage.

SSeettttiinngg CCPPUU FFrreeqquueennccyy

BIOS Setup > Frequency/Voltage Control > CPU Clock Setting

This motherboard is CPU jumper-less design, you can set CPU frequency through the BIOS setup, and no jumpers or switches

are needed.

CPU Ratio 8x, 9x, 10x,…22x, 23x, 24x

CPU FSB 100~248MHz

Home

Tip: If your system hangs or fails to boot because of

overclocking, simply use <Home> key to restore the

default setting or you can wait the AOpen “Watch Dog

Timer” reset the system after five seconds and system

will auto-detect hardware again.

MMXX44LLRR OOnnlliinnee MMaannuuaall

Core Frequency = CPU FSB Clock * CPU Ratio

PCI Clock = CPU FSB Clock / Clock Ratio

AGP Clock = PCI Clock x 2

Northwood CPU

Pentium 4 1.6G 1600MHz 100MHz 400MHz 16x

Pentium 4 1.8G 1800MHz 100MHz 400MHz 18x

Pentium 4 2.0G 2000MHz 100MHz 400MHz 20x

Pentium 4 2.2G 2200MHz 100MHz 400MHz 22x

Pentium 4 2.4G 2400MHz 100MHz 400MHz 24x

Williamett CPU

Pentium 4 1.5G 1500MHz 100MHz 400MHz 15x

Pentium 4 1.6G 1600MHz 100MHz 400MHz 16x

Pentium 4 1.7G 1700MHz 100MHz 400MHz 17x

Pentium 4 1.8G 1800MHz 100MHz 400MHz 18x

Pentium 4 1.9G 1900MHz 100MHz 400MHz 19x

Pentium 4 2.0G 2000MHz 100MHz 400MHz 20x

CPU Core Frequency

CPU Core

Frequency

FSB Clock System Bus Ratio

Warning: Intel® 845GL (MX4LR) chipset

supports maximum 400MHz (100MHz*4)

system bus and 66MHz AGP clock; higher

clock setting may cause serious system

damage.

Warning: To avoid possible CPU damage caused by

overheating, an automatic shutdown of system had been

especially designed on this motherboard. System would

be automatically power off when this motherboard with

implementation of THERMTRIP circuit detected a CPU

erature above 135 degree.

tem

MMXX44LLRR OOnnlliinnee MMaannuuaall

CCPPUU aanndd SSyysstteemm FFaann CCoonnnneeccttoorr ((wwiitthh HH//WW MMoonniittoorriinngg))

Plug in the CPU fan cable to the 3-pin CPU FAN connector. If you have chassis fan, you can also plug it on System Fan (FAN2)

or FAN3 (AUX Fan) connector.

FAN3 Connector

GND

+12V

SENSOR

CPU Fan Connector

FAN2 Connector

Note: Some CPU fans do not have

sensor pin, so that cannot support

hardware monitoring function.

GND +12V SENSOR

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JJPP2288 KKeeyybbooaarrdd//MMoouussee WWaakkee--uupp EEnnaabbllee//DDiissaabbllee JJuummppeerr

This motherboard provides keyboard / mouse wake-up function. You can use JP28 to enable or disable this function, which

could resume your system from suspend mode with keyboard or mouse installed. The factory default setting is set to

“Disable”(1-2), and you may enable this function by setting the jumper to 2-3.

Enable

(Default)

Disable

JP28

KB/Mouse Wake-up

MMXX44LLRR OOnnlliinnee MMaannuuaall

DDIIMMMM SSoocckkeettss

This motherboard has two 184-pin DDR DIMM sockets that allow you to install PC266 memory up to 2GB. Both ECC and

Non-ECC DDR SDRAM are supported, but you can’t install them both on DIMM. Otherwise, it will cause serious damage on

memory sockets or SDRAM module.

DIMM1 DIMM2

MMXX44LLRR OOnnlliinnee MMaannuuaall

HHooww ttoo IInnssttaallll MMeemmoorryy MMoodduulleess

Please follow the procedure as shown below to finish memory installation.

1. Make sure the DIMM module’s pin face down and match the socket’s size as depicted below.

2. Insert the module straight down to the DIMM slot with both hands and press down firmly until the DIMM module is securely

in place.

3. Repeat step 2 to finish additional DIMM modules installation.

Ta b

52 pins40 pins

Note: The tabs of the DIMM slot

will close-up to hold the DIMM in

place when the DIMM touches

the slot’s bottom.

MMXX44LLRR OOnnlliinnee MMaannuuaall

FFrroonntt PPaanneell CCoonnnneeccttoorr

Attach the power LED, Keylock, speaker, power and reset switch connectors t

the corresponding pins. If you enable “Suspend Mode” item in BIOS Setup, th

ACPI & Power LED will keep flashing while the system is in suspend mode.

Locate the power switch cable from your ATX housing. It is 2-pin female

connector from the housing front panel. Plug this connector to the soft-power

switch connector marked SPWR.

Suspend Type ACPI LED

Power on Suspend (S2) or Suspend to RAM (S3) Flashing for every second

Suspend to Disk (S4) The LED will be turned off

GND

Keylock

+5V IDE LED IDE LED

+5V

GND

5VSB SPWR ACPI LED GND ACPILED NC NC GND RESET GND

IDE LED

Spea ke r

SPWR

CPI & PWR

LED

Reset

SPEAKER

MMXX44LLRR OOnnlliinnee MMaannuuaall

AATTXX PPoowweerr CCoonnnneeccttoorr

This motherboard comes with a 20-pin and 4-pin ATX power connector. Make sure you plug in the right direction. We strongly

recommend you to connect the 4-pin 12V ATX connector before connecting the 20-pin ATX power connector and use standard

power supply specially designed for Pentium 4 system.

12V

Ground

12V

20-Pin Power Connector

+5V COM PW-OK 5VSB +12V

+5V +5V

-5V COM COM

4-Pin 12V ATX Power Connector

COM

+5V

COM +3.3V +3.3V

+3.3V

-12V

COM

PS-ON

COM

Pin1

MMXX44LLRR OOnnlliinnee MMaannuuaall

AACC PPoowweerr AAuuttoo RReeccoovveerryy

A traditional ATX system should remain at power off stage when AC power resumes from power failure. This design is

inconvenient for a network server or workstation, without an UPS, that needs to keep power-on. This motherboard implements

an AC Power Auto Recovery function to solve this problem.

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IIDDEE aanndd FFllooppppyy CCoonnnneeccttoorr

Connect 34-pin floppy cable and 40-pin IDE cable to floppy connector FDC and IDE connector. The blue connector is IDE1 for

clear identification. Be careful of the pin1 orientation. Wrong orientation may cause system damage.

Secondary

Slave (4th)

Pin 1

Primary

Slave (2nd)

ATA 33/66/100 IDE Connector

Pin 1

FDD Connector

Secondary

Master (3rd)

IDE 2 (Secondary)

IDE 1 (Primary)

Primary Master

(1st)

required.is66/100

MMXX44LLRR OOnnlliinnee MMaannuuaall

IDE1 is also known as the primary channel and IDE2 as the secondary channel. Each channel supports two IDE devices that

make a total of four devices. In order to work together, the two devices on each channel must be set differently to Master and

Slave mode. Either one can be the hard disk or the CDROM. The setting as master or slave mode depends on the jumper on

your IDE device, so please refer to your hard disk and CDROM manual accordingly.

This motherboard supports ATA33

modes. The IDE bus is 16-bit, which means every transfer is two bytes.

Mode Clock Period Clock

PIO mode 0 30ns 20 600ns (1/600ns) x 2byte = 3.3MB/s

PIO mode 1 30ns 13 383ns (1/383ns) x 2byte = 5.2MB/s

PIO mode 2 30ns 8 240ns (1/240ns) x 2byte = 8.3MB/s

PIO mode 3 30ns 6 180ns (1/180ns) x 2byte = 11.1MB/s

PIO mode 4 30ns 4 120ns (1/120ns) x 2byte = 16.6MB/s

DMA mode 0 30ns 16 480ns (1/480ns) x 2byte = 4.16MB/s

DMA mode 1 30ns 5 150ns (1/150ns) x 2byte = 13.3MB/s

DMA mode 2 30ns 4 120ns (1/120ns) x 2byte = 16.6MB/s

ATA 33 30ns 4 120ns (1/120ns) x 2byte x2 = 33MB/s

ATA 66 30ns 2 60ns (1/60ns) x 2byte x2 = 66MB/s

ATA100 20ns 2 40ns (1/40ns) x 2byte x2 = 100MB/s

, ATA66 or ATA100 IDE devices. Following table lists the transfer rate of IDE PIO and DMA

Tip:

Count

Cycle Time Data Transfer Rate

1. For better signal quality,

it is recommended to set

the far end side device

to master mode and

follow the suggested

sequence to install your

new device. Please refer

to above diagram

2. To achieve the best

performance of Ultra

DMA 66/100 hard disks,

a special 80-wires IDE

cable for Ultra DMA

Warning: The specification of the IDE cable is a maximum of 46cm (18 inches);

make sure your cable does not exceed this length.

MMXX44LLRR OOnnlliinnee MMaannuuaall

IIrrDDAA CCoonnnneeccttoorr

The IrDA connector can be configured to support wireless infrared module, with this module and application software such as

Laplink or Windows 95 Direct Cable Connection, the user can transfer files to or from laptops, notebooks, PDA devices and

printers. This connector supports HPSIR (115.2Kbps, 2 meters) and ASK-IR (56Kbps).

Install the infrared module onto the IrDA connector and enable the infrared function from BIOS Setup, UART Mode, make sure

to have the correct orientation when you plug in the IrDA connector.

+5V

IR_TX

IIrrDDAA CCoonnnneeccttoorr

Pin 1

KEY GND IR_RX

MMXX44LLRR OOnnlliinnee MMaannuuaall

SS//PPDDIIFF ((SSoonnyy//PPhhiilliippss DDiiggiittaall IInntteerrffaaccee)) CCoonnnneeccttoorr

S/PDIF (Sony/Philips Digital Interface) is a newest audio transfer file format, which provides impressive quality through optical

fiber and allows you to enjoy digital audio instead of analog audio. Normally there are two S/PDIF outputs as shown, one for

RCA connector, the most common one used for consumer audio products, and the other for optical connector with better audio

quality. Through a specific audio cable, you can connect the S/PDIF connector to other end of the S/PDIF audio module, which

bears S/PDIF digital output. However, you must have a S/PDIF supported speaker with S/PDIF digital input to connect to the

S/PDIF digital output to make the most out of this function.

Connecting to

Optical Cable

S/PDIF Module

(Optional)

Pin 1

udio cable

S/PDIF

Connector

SPDIFIN

GND

SPDIFOUT

MMXX44LLRR OOnnlliinnee MMaannuuaall

AADDDD ((AAGGPP DDiiggiittaall DDiissppllaayy)) SSlloott

AGP Digital Display card is designed by Intel to multiplexe the AGP signal interface with two DVO ports, and is designed to plug

into the special-designed purple slot as you can see, which we call ADD slot here. The function of these two DVO ports is to

support a variety of digital display devices, such as LCDs and Digital-input CRT, and is possible to use in dual-channel mode to

support higher resolution and refresh rate, while deliver digital signal from source to display to preserve signal integrity and the

viewable image quality. Please note that this ADD slot supports ADD cards only.

MMXX44LLRR OOnnlliinnee MMaannuuaall

WWOOMM ((ZZeerroo VVoollttaaggee WWaakkee oonn MMooddeemm)) CCoonnnneeccttoorr

motherboard implements special circuit to support Wake On Modem, both Internal modem card and external box modem

TThhiiss

are supported. Since Internal modem card consumes no power when system power is off, it is recommended to use an internal

modem. To use internal modem, connect 4-pin cable from RING connector of modem card to the WOM connector on the

motherboard.

Pin 1

WOM Connector

+5VSB

RI-

GND

MMXX44LLRR OOnnlliinnee MMaannuuaall

WWOOMM bbyy EExxtteerrnnaall BBOOXX MMooddeem

Traditional Green PC suspend mode does not really turn off the system power supply, it uses external box modem to trigger MB

COM port and resume back to active.

Note: This picture is for example only, it may not be exactly the same as this motherboard.

Pin 1

Serial Port

(Modem Side)

(Motherboard Side)

Serial Port

MMXX44LLRR OOnnlliinnee MMaannuuaall

WWOOMM bbyy IInntteerrnnaall MMooddeemm CCaarrd

With the help of the ATX soft power On/Off, it is possible to have a system totally power off, and wakeup to automatically answer

a phone call as an answering machine or to send/receive a fax. You may identify whether or not your system is in true power off

mode by checking to see if the fan of your power supply is off. Both an external box modem and an internal modem card can be

used to support Modem Wake Up, but if you use an external modem, you have to leave your box modem on.

Note: This picture is for example only, it may not be exactly the same as this motherboard.

MMXX44LLRR OOnnlliinnee MMaannuuaall

WWOOLL ((WWaakkee oonn LLAANN))

This feature is very similar as Wake On Modem, but it goes through local area network. To use Wake On LAN function, you must

have a network card with chipset that supports this feature, and connect a cable from LAN card to motherboard WOL connector.

The system identification information (probably IP address) is stored on network card and because there is a lot of traffic on the

Ethernet, you need to install network management software, such as ADM, for the checking of how to wake up the system. Note

that, at least 600mA ATX standby current is required to support the LAN card for this function.

WOL Connector

+5VSB

GND

LID

MMXX44LLRR OOnnlliinnee MMaannuuaall

WOL Connector

(Motherboard Side)

Note: This picture is for example only, it may not exactly be the same motherboard.

WOL Connector

(Ethernet Card Side)

MMXX44LLRR OOnnlliinnee MMaannuuaall

CCNNRR ((CCoommmmuunniiccaattiioonn aanndd NNeettwwoorrkk RRiisseerr)) EExxppaannssiioonn SSlloott

CNR is a riser card specification to replace the AMR (Audio/Modem Riser) that supports V.90 analog modem, multi-channel

audio, and phone-line based networking. Owing to CPU computing power getting stronger, the digital processing job can be

implemented in main chipset and share CPU power. The analogy conversion (CODEC

circuit design, which is put on CNR card. This motherboard implements sound CODEC on board, but reserve CNR slot for the

option of modem function. Note that you can still use PCI modem card.

) circuit requires a different and separate

MMXX44LLRR OOnnlliinnee MMaannuuaall

PPCC9999 CCoolloorr CCooddeedd BBaacckk PPaanneell

The onboard I/O devices are PS/2 Keyboard, PS/2 Mouse, COM1 and VGA, Printer, USB, AC97 sound and game ports. The

view angle of drawing shown here is from the back panel of the housing.

PS/2 Mouse

Connector

SPP/EPP/ECP

Parallel Port

RJ45 10/100

MIDI/Game Port

LAN Jack

PS/2 Keyboard

PS/2 Keyboard: For standard keyboard, which is using a PS/2 plug. PS/2 Mouse: For PC-Mouse, which is using a PS/2 plug. USB Port: Available for connecting USB devices. Parallel Port: To connect with SPP/ECP/EPP printer. COM1/COM2 Port: To connect with pointing devices, modem or others serial devices. VGA Connector: To connect with PC monitor. Speaker Out: To External Speaker, Earphone or Amplifier. Line-In: Comes from the signal sources, such as CD/Tape player. MIC-In: From Microphone. MIDI/Game Port: For 15-pin PC joystick, game pad or MIDI devices.

Connector

COM 1 Port

VGA Port

MIC-In

Line-In

Speaker Out

USB (V2.0)

Connectors

MMXX44LLRR OOnnlliinnee MMaannuuaall

SSuuppppoorrtt 1100//110000 MMbbppss LLAANN oonnbbooaarrdd

The South Bridge ICH4 includes a fast Ethernet controller on chip. On the strength of Realtek 8100BL LAN controller on

board, which is a highly-integrated Platform LAN Connect device, it provides 10/100M bps Ethernet for office and home use,

the Ethernet RJ45 connector is located on top of USB connectors. The green LED indicates the link mode, it lights when

linking to network and blinking when transferring data. The orange LED indicates the transfer mode, and it lights when data

is transferring in 100Mbps mode. To enable or disable this function, you may simply adjust it through BIOS.

Green/ACT

Orange/Speed

MMXX44LLRR OOnnlliinnee MMaannuuaall

nnd

SSuuppppoorrtt 2

Compared to traditional USB 1.0/1.1 with the speed of 12Mbps, USB 2.0 has a fancy speed up to 480Mbps which is 40 times

faster than the traditional one. Except for the speed increase, USB 2.0 supports old USB 1.0/1.1 software and peripherals,

offering impressive and even better compatibility to customers. On this motherboard, USB2 and USB3 connectors support USB

2.0 function. To connect those two headers, you have to use proper USB cables and connect them to any USB models.

aanndd 3

Pin 1

USB2 and USB3 Connector

USBPWR0

USB_FP_P0-

USB_FP_P0+

GND

KEY

rrd

UUSSBB22..00 PPoorrttss

1 2

USBPWR0

USB_FP_P1-

USB_FP_P1+

GND

USB_FP_OC0

9 10

MMXX44LLRR OOnnlliinnee MMaannuuaall

CChhaassssiiss IInnttrruussiioonn CCoonnnneeccttoorr

The “CASE OPEN” header provides chassis intrusion-monitoring function. To make this function works, you have to enable it in

the system BIOS, connect this header to a sensor somewhere on the chassis. So, whenever the sensor is triggered by lights or

the opening of the chassis, the system will send out beep sound to inform you. Please be informed that this useful function only

applies to advanced chassis, you may purchase an extra sensor, attach it on your chassis, and make a good use of this

function.

Chassis Intrusion

Connector

GND

SENSOR

MMXX44LLRR OOnnlliinnee MMaannuuaall

CCDD AAuuddiioo CCoonnnneeccttoorr

This connector is used to connect CD Audio cable from CDROM or DVD drive to onboard sound.

GND

CCDD--IINN CCoonnnneeccttoorr

MMXX44LLRR OOnnlliinnee MMaannuuaall

AAUUXX--IINN CCoonnnneeccttoorr

This connector is used to connect MPEG Audio cable from MPEG card to onboard sound.

GND

AAUUXX--IINN CCoonnnneeccttoorr

MMXX44LLRR OOnnlliinnee MMaannuuaall

FFrroonntt AAuuddiioo CCoonnnneeccttoorr

If the housing has been designed with an audio port on the front panel, you’ll be able to connect onboard audio to front panel

through this connector. By the way, please remove 5-6 and 9-10 jumper caps from the Front Audio Connector before

connecting the cable. Please do not remove these 5-6 and 9-10 yellow jumper caps if there’s no audio port on the front

panel.

Pin 1

AUD_MIC

AUD_MIC_BIAS

AUD_FPOUT_R

AUD_FROUT_L

1 2

UD_GND

UD_VCC

UD_RET_R

KEY

UD_RET_L

9 10

Note: Please remove the jumper cap from the Front Panel Audio Connector

before you connect the cable. Do not remove this yellow jumper cap if

housin

without an audio port on the front panel.

MMXX44LLRR OOnnlliinnee MMaannuuaall

Auto Switch

RTC

CMOS

uto switching to ATX standby

power as long as AC power line is

plugged. This smart design

increases battery life if you still plug

battery on motherboard.

Backup by EEPROM

BBaatttteerryy--lleessss aanndd LLoonngg LLiiffee DDeessiiggnn

This Motherboard implements Flash ROM and a special circuit that allows you to save your current CPU and CMOS Setup

configurations without the need of a battery. The RTC (real time clock) can also keep running as long as the power cord is

plugged. If you lose your CMOS data by accident, you can just reload the CMOS configurations from Flash ROM and the system

will recover as usual.

Flash

ROM

ATX Stand-by Power Battery

(Real Time Clock)

00:00:00

MMXX44LLRR OOnnlliinnee MMaannuuaall

CCPPUU OOvveerr--ccuurrrreenntt PPrrootteeccttiioonn

Over Current Protection has been popularly implemented on ATX 3.3V/5V/12V switching power supply for a while. However,

new generation CPU is able to use regulator of different voltages to transfer 12V to CPU voltage (for example, to 2.0V). This

motherboard is with switching regulator onboard that supports CPU over-current protection, and it applies to 3.3V/5V/12V power

supply for providing full line over-current protection.

Note: Although we have implemented protection circuit try to prevent any human operating

mistake, there is still certain risk that CPU, memory, HDD, add-on cards installed on this

motherboard may be damaged because of component failure, human operating error or unknown

nature reason. AOpen cannot guaranty the protection circuit will always work perfectly.

ATX

Switching

Power

Supply

5V (Protected by power supply)

3.3V (Protected by power supply)

12V (Protected by power supply)

Onboard

Power

Regulator

Over-Current

Protection

CPU Core Voltage

Circuit

MMXX44LLRR OOnnlliinnee MMaannuuaall

HHaarrddwwaarree MMoonniittoorriinngg

This motherboard implements a hardware monitoring system. As you turn on your system, this smart design will continue to

monitor your system’s working voltage, fan status and CPU temperature. If any of these systems’ status goes wrong, there will

be an alarm through the chassis external speaker or buzzer of motherboard (if existed) to warn the user.

Fan

CPU

Power

Fan Speed

AOpen H/W

Monitoring

Utility

CPU Temperature

CPU Voltage

System Voltage

Detection

Circuit

MMXX44LLRR OOnnlliinnee MMaannuuaall

RReesseettttaabbllee FFuussee

Traditional motherboard has fuse for Keyboard and USB port to prevent over-current or shortage. These fuses are soldered

onboard that when it is broken (function as protecting the motherboard), user still cannot replace it and the motherboard is still

malfunctioning.

With expensive Resettable Fuse, the motherboard can be resumed back to normal function after the fuse had done its

protection job.

Resettable

Fuse

MMXX44LLRR OOnnlliinnee MMaannuuaall

2222000

The quality of low ESR capacitor (Low Equivalent Series Resistance) during high frequency operation is very important for the

stability of CPU power. The idea of where to put these capacitors is another know-how that requires experience and detail

calculation.

Not only that, MX4LR implements 2200μF capacitors, which is much larger than normal capacitor (1000 and 1500μf) and it

provides better stability for CPU power.

FF LLooww EESSRR CCaappaacciittoorr

MMXX44LLRR OOnnlliinnee MMaannuuaall

LLaayyoouutt ((FFrreeqquueennccyy IIssoollaattiioonn WWaallll))

Note: This diagram for example only, it may not be exactly the same as this motherboard.

For high frequency operation, especially overclocking,

layout is the most important factor to make sure

chipset and CPU working in stable condition. The

layout of this motherboard implements AOpen’s

unique design called “ Frequency Isolation Wall”.

Separating each critical portion of motherboard into

regions where each region operates in a same or

similar frequency range to avoid cross talk and

frequency interference between each region’s

operations and condition. The trace length and route

must be calculated carefully. For example, the clock

trace must be equal length (not necessarily as short

as possible) so that clock skew will be controlled

within few a pico second (1/10

Sec)

MMXX44LLRR OOnnlliinnee MMaannuuaall

EEnnllaarrggeedd AAlluummiinnuumm HHeeaattssiinnkk

Cool down CPU and Chipset is important for system reliability. Enlarged aluminum heat sink provides better heat consumption

especially when you are trying to over clocking the CPU.

MMXX44LLRR OOnnlliinnee MMaannuuaall

DDrriivveerr aanndd UUttiilliittyy

There are motherboard drivers and utilities included in AOpen Bonus CD disc. You don’t need to install all of them in order to

boot your system. But after you finish the hardware installation, you have to install your operation system first (such as Windows

98) before you can install any drivers or utilities. Please refer to your operation system’s installation guide.

Note: Please follow recommended procedure

to install Windows 2000

and Windows 98.

MMXX44LLRR OOnnlliinnee MMaannuuaall

AAuuttoo--rruunn MMeennuu ffrroomm BBoonnuuss CCDD DDiisscc

You can use the auto-run menu of Bonus CD disc. Choose the utility and driver and select model name.

MMXX44LLRR OOnnlliinnee MMaannuuaall

IInnssttaalllliinngg IInntteell®® CChhiippsseett SSooffttwwaarree IInnssttaallllaattiioonn UUttiilliittyy

Windows 95/98 cannot recognize this chipset, because it was released before the Intel 845GL chipset. You can install the Intel

INF Update Utility from the Bonus Pack CD disc auto-run menu to eliminate the “?” marks.

MMXX44LLRR OOnnlliinnee MMaannuuaall

IInntteell VVGGAA ddrriivveerr

You can install Intel VGA Driver to get the best graphics function of the chipset. You can find it in the AOpen Bonus Pack CD

disc.

MMXX44LLRR OOnnlliinnee MMaannuuaall

IInnssttaalllliinngg IInntteell IIAAAA DDrriivveerr

You can install Intel IAA Driver to increase the performance of software applications and reduce PC boot times. You can find it in

the AOpen Bonus Pack

CD disc.

MMXX44LLRR OOnnlliinnee MMaannuuaall

IInnssttaalllliinngg OOnnbbooaarrdd SSoouunndd DDrriivveerr

This motherboard comes with AC97 CODEC. You can find the audio driver from the Bonus Pack CD disc auto-run menu.

MMXX44LLRR OOnnlliinnee MMaannuuaall

IInnssttaalllliinngg LLAANN DDrriivveerr

You can install LAN Driver under Windows95/98, Windows NT and Windows 2000 for RealTek 8100BL PCI Fast Ethernet adapter by following steps.

Installing driver procedure on Microsoft Windows 95 :

-----------------------------------------------------

1. Select "Driver from disk provided by hardware manufacturer" when being asked which driver you would like to install.

2. Specify the setup file pathname [CD-ROM]:Driver\LAN\RTL8100\Windows\Win95\WIN95A (for Windows 95 and Win95A) or [CD-ROM]:Driver\LAN\RTL8100\Windows\Win95 (for Windows 95 OSR2).

3. Follow the procedure and insert Windows 95 system disk to complete setup step.

4. Windows 95 will finish the other installation procedures automatically, and then restart your system.

Installing driver for Win98/Win98 SE/Windows2000/Windows ME :

-------------------------------------------------------------------

1. Select "Driver from disk provided by hardware manufacturer" when being asked which driver you would like to install.

2. Specify the setup file pathname [CD-ROM]:Driver\LAN\RTL8100\Windows\WIN98 (for Windows 98/98 SE) or [CD-ROM]:Driver\LAN\RTL8100\Windows\WIN2000 (for Windows 2000) or [CD-ROM]:Driver\LAN\RTL8100\Windows\Windows ME (for Windows ME)

3. Follow the procedure and insert your system disk (Win98/Win98 SE/Windows2000/Windows ME) to complete setup step.

4. Win98/Win98 SE/Windows2000/Windows ME will finish the other installation procedures automatically, and then restart your

system.

MMXX44LLRR OOnnlliinnee MMaannuuaall

IInnssttaalllliinngg UUSSBB22..00 DDrriivveerr

* Windows 2000 Installation Guide

************************************************* Installing Driver in Existing Windows 2000 System *************************************************

fter enabling the USB 2.0 controller and rebooting your system, Windows 2000 setup will show a "New Hardware Found" dialog box. Under Windows 2000, "Universal Serial Bus (USB) Controller" will be displayed.

1. Choose "Search for a suitable driver for my device (Recommended)". from the list, and then press "Enter".

2. Choose "Specify a location." and then press "Next"

3. Insert the Bonus CD in CD-ROM.

4. Type "[CD-ROM]:\Driver\Intel\USB2.0" in the text box that appears. Press " OK ".

5. Click on "Next." A message informing you that Windows has found "Intel (R) USB Enhanced Host Controller (ICH4)" should appear.

6. Click on "Next," and then on "Finish."

************************************ Confirming Windows 2000 Installation ************************************

1. From Windows 2000, open the Control Panel from "My Computer" followed by the System icon.

2. Choose the "Hardware" tab, and then click the "Device Manager" tab.

3. Click the "+" in front of "Universal Serial Bus controllers". "Intel (R) USB Enhanced Host Controller (ICH4)" should appear.

MMXX44LLRR OOnnlliinnee MMaannuuaall

* Windows XP Installation Guide

*********************************************** Installing Driver in Existing Windows XP System ***********************************************

fter enabling the USB 2.0, Windows XP setup will show a "Found New Hardware" dialog box.

Under Windows XP, "Universal Serial Bus (USB) Controller" will be displayed.

1. Click on "Next," and from the generated list box, choose "Install from a list or special location (Advanced)", click "Next"

2. Click on "Next," and from the generated choices, choose "Include this location in the search:"

3. Insert the Bonus CD in CD-ROM.

4. Type "[CD-ROM]:\Driver\Intel\USB2.0" in the text box that appears.

5. Click on "Next." A message informing you that Windows XP has found "Intel (R) USB Enhanced Host Controller (ICH4)" should appear.

6. When the New Hardware Wizard has finished installing the USB driver, click on "Finish"

********************************** Confirming Windows XP Installation **********************************

1. From Windows XP, open the Control Panel from "My Computer".

2. Click on "Performance and maintenance".

3. Click on the "System" icon.

4. Choose the "Hardware" tab, and then click the "Device Manager" tab.

5. Click the "+" in front of "Universal Serial Bus Controllers". "Intel (R) USB Enhanced Host Controller (ICH4)" should appear.

MMXX44LLRR OOnnlliinnee MMaannuuaall

IInnssttaalllliinngg HHaarrddwwaarree MMoonniittoorriinngg UUttiilliittyy

You can install Hardware Monitoring Utility to monitor CPU temperature, fans and system voltage. The hardware monitoring function is

automatically implemented by the BIOS and utility software. No hardware installation is needed.

MMXX44LLRR OOnnlliinnee MMaannuuaall

AACCPPII SSuussppeenndd ttoo HHaarrdd DDrriivvee

ACPIACPI Suspend to Hard Drive is basically controlled by Windows operation system. It saves your current work (system status,

memory and screen image) into hard disk, and then the system can be totally power off. Next time, when power is on, you can

resume your original work directly from hard disk within few seconds without go through the Windows booting process and run

your application again. If your memory is 64MB, normally, you need to reserve at least 64MB HDD space to save your memory

image.

When go into Suspend:

When power-on next time:

ACCPPII SSuussppeenndd ttoo HHaarrdd DDrriivvee

System

Image &

Status

System

Image &

Status

Hard

Disk

Hard

Disk

Save into

Restore within

seconds

MMXX44LLRR OOnnlliinnee MMaannuuaall

System Requirement

1. AOZVHDD.EXE 1.30b or later.

2. Delete config.sys and autoexec.bat.

Fresh installation of Windows 98 on a new system

1. Execute "Setup.exe /p j" to install Windows 98

2. After Windows 98's installation is complete, go to the Control Panel > Power Management.

a. Set Power Schemes > System Standby to "Never".

b. Click on "Hibernate" and select "Enable Hibernate Support" then "Apply".

c. Click on the "Advanced" tab, you'll see "Hibernate" on "Power Buttons". Note that this option will only be seen after step

b mentioned above has been completed; otherwise only "Standby" and "Shutdown" will be shown. Select "Hibernate" and

"Apply".

3. Clean boot into DOS and run AOZVHDD utility.

a. If you assign the whole disk to your Win 98 system (FAT 16 or FAT 32), please run "aozvhdd /c /file". Please remember

sufficient free space has to be reserved in the disk, e.g. if you have 64 MB DRAM and 16 MB VGA card installed, the

system needs at least 80 MB free space. The utility will locate the space automatically.

b. If you assign an individual partition for Win 98, please run "aozvhdd /c /partition". Of course, the system needs to

provide unformatted an empty partition.

4. Reboot system.

5. You've already implemented ACPI Suspend to-Hard Drive. Click "Start > Shut Down > Standby" then the screen will go off

MMXX44LLRR OOnnlliinnee MMaannuuaall

immediately. And 1 minute or so will be taken for the system to save what's in the memory to the hard drive; the larger the

memory size the longer this process will take.

MMXX44LLRR OOnnlliinnee MMaannuuaall

Changing from APM to ACPI (Windows 98 only)

1. Run "Regedit.exe"

a. Go through the following path

HKEY_LOCAL_MACHINE

SOFTWARE

MICROSOFT

WINDOWS

CURRENT VERSION

DETECT

b. Select "ADD Binary" and name it as "ACPIOPTION".

c. Right click and select Modify, add "01" after "0000" to make it "0000 01".

d. Save changes.

2. Select "Add New Hardware" under Control Panel. Allow Windows 98 to detect new hardware. (It will find "ACPI BIOS" and

remove "Plug and Play BIOS")

3. Reboot system.

4. Clean boot into DOS and run "AOZVHDD.EXE /C /File"

Changing from ACPI to APM

1. Run "Regedit.exe"

a. Go through the following path

MMXX44LLRR OOnnlliinnee MMaannuuaall

HKEY_LOCAL_MACHINE

SOFTWARE

MICROSOFT

WINDOWS

CURRENT VERSION

DETECT

ACPI OPTION

b. Right click and select "Modify, change "01" to "02" to make it "0000 02".

c. Save changes.

2. Select "Add New Hardware" under Control Panel. Allow Windows 98 to detect new hardware. (It will find "Plug and Play

BIOS" and remove "ACPI BIOS")

3. Reboot system.

4. Run "Add New Hardware" again and it will find "Advanced Power Management Resource".

5. Click "OK".

Tip: "02" means Windows 98 is ACPI acknowledged

but the ACPI function is disabled.

Tip: Currently we found only ATI 3D Rage Pro AGP card would support

CPI suspend to disk. Please refer to AOpen web site for latest update

MMXX44LLRR OOnnlliinnee MMaannuuaall

AACCPPII SSuussppeenndd ttoo RRAAMM ((SSTTRR))

This motherboard supports ACPI Suspend to RAM function. With this function, you can resume your original work directly from

DRAM without going through the Windows 98 booting process and run your application again. Suspend to DRAM saves your

current work in the system memory, it is faster than Suspend to Hard Drive but requires power supplied to DRAM, while

Suspend to Hard Drive requires no power.

When go into Suspend:

System Image & Status

in the DRAM

Backup by 3.3V

Power

Other System

Devices

Power loss

When power-on next time:

System Image & Status

in the DRAM

Power back to

Other System

Devices

Power back to

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To implement ACPI Suspend to DRAM, please follow the procedures as below:

System Requirement

1. An ACPI OS is required. Currently, except Windows 95 and Windows NT, all other Windows Systems support ACPI.

2. The Intel® Chipset Software Installation Utility must have been installed properly.

Procedures

1. Changed the following BIOS settings.

BIOS Setup > Power Management Setup > ACPI Function: Enabled

BIOS Setup > Power Management Setup > ACPI Suspend Type: S3.

2. Go to Control Panel > Power Management. Set “Power Buttons” to “Standby”.

3. Press power button or standby button to wake up the system.

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AAWWAARRDD BBIIOOSS

System parameters can be modified by going into BIOS Setup menu, this menu allows you to configure the system parameters

and save the configuration into the 128 bytes CMOS area, (normally in the RTC chip or in the main chipset).

The AwardBIOS™ that installed in the Flash ROM

BIOS provides critical low-level support for standard devices such as hard disk drives, serial and parallel ports.

Most BIOS setting of MX4LR had been optimized by AOpen’s R&D engineering team. But, the default setting of BIOS still can’t

fine-tune the chipset controlling entire system. Hence, the rest of this chapter is intended to guide you through the process of

configuring your system using setup.

Currently there are two kinds of beep sound when system fails to boot at POST. The first type of beep sound consists of a single

long beep and two short beeps, indicating a video error has failed BIOS from initializing video screen for displaying any

additional information. The 2

occurred. You may look over the indicated error according to different beep significances.

To enter to BIOS setup menu

type of beep sound is a single long beep that beeping repeatedly, signaling a DRAM error has

, press <Del> when POST (Power-On Self Test) screen is shown on your monitor.

of the motherboard is a custom version of an industry standard BIOS. The

Note: Because the BIOS code is the most often

changed part of the motherboard design, the BIOS

information contained in this manual may be

different with actual BIOS that come with your

motherboard.

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AAbboouutt BBIIOOSS FFuunnccttiioonn DDeessccrriippttiioonn……

AOpen always dedicates to give users a more friendly computer system. Now, we include all function descriptions of BIOS setup

program into the BIOS Flash ROM. When you select one function of BIOS setup program, the function description will appeared

at right side of screen. Hence, you don’t need read this manual while you changing the BIOS setting.

Item Function Description Window Menu Items Select Window

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HHooww TToo UUssee AAwwaarrdd™™ BBIIOOSS SSeettuupp PPrrooggrraamm

Generally, you can use the arrow keys to highlight items that you want to choose, then press <Enter> key to select, and use the

<Page Up> and <Page Down> key to change setting value. You also can press <F1> key for help and press <Esc> key to quit Award™ BIOS setup program. The following table provides details about how to use keyboard in the Award™ BIOS setup

program. By the way, all products of AOpen also provides a special function in the BIOS setup, you can press <F3> key

selecting preferred menu language to display.

Key Description

Page Up or + Changing setting to next value or increase the value.

Page Down or - Changing setting to previous value or decrease value.

Enter Select the item.

Esc 1. In main menu: Quit and don’t save any change.

2. In sub menu: Exit current menu to main menu.

Up Arrow Highlight previous item.

Down Arrow Highlight next item.

Left Arrow Move the light bar to left side of menu.

Right Arrow Move the light bar to right side of menu.

F1 Get menu or item help description.

F3 Changing menu language.

F5 Load previous setting value from CMOS.

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Key Description

F6 Load fail-save setting value from CMOS.

F7 Load turbo setting value from CMOS.

F10 Save changed setting and exit setup program.

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HHooww TToo EEnntteerr BBIIOOSS SSeettuupp

After you finish the setting of jumpers and connect correct cables. Power on and enter the BIOS Setup, press <Del> during

POST (Power-On Self Test). Choose "Load Setup Defaults" for recommended optimal performance.

Del

Warning: Please avoid of using "Load Turbo Defaults", unless

you are sure your system components (CPU, DRAM, HDD, etc.)

are good enough for turbo setting.

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BBIIOOSS UUppggrraaddee uunnddeerr WWiinnddoowwss eennvviirroonnmmeenntt

With outstanding R&D ability of AOpen, we now bring you a whole new BIOS Flash wizard ---- EZWinFlash. With an eye to

users convenience, EZWinFlash combines the BIOS binary code and flash module together, so the only thing you have to do is

just clicking on the utility you downloaded from web and let it helps you complete the flash process automatically. EZWinFlash

detects your motherboard and checks the BIOS version cleverly to prevent your system from any possible failure. Moreover,

EZWinFlash has been taken into consideration to go with any windows platform you might be using, no matter if you’re using

Windows 95/98, 98SE/ME, NT4.0/2000, or even the latest Windows XP.

In the meanwhile, in order to provide a much more user-friendly operating environment, AOpen EZWinFlash is natively designed

to have multi-language function to provide easier way for users’ usage in changing BIOS setting.

Note: The model name on this BIOS picture is for reference only. It may not be the exact model name.

Caution: By updating your motherboard,

you are taking a risk of BIOS flash

failure. If your motherboard is working

stable, and there are no major bugs that

had been fixed by a latter BIOS revision,

we recommend that you DO NOT try to

upgrade your BIOS.

If you intent on upgrading, PLEASE BE

SURE to get the right BIOS revision for

the right motherboard model to avoid any

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You may accomplish BIOS upgrade procedure with EZWinFlash by the following steps, and it’s STRONGLY RECOMMMANDED

to close all the applications before you start the upgrading.

1. Download the new version of BIOS package zip file from AOpen official web site. (ex: http://www.aopen.com)

2. Unzip the download BIOS package (ex: WMX4LR102.ZIP) with WinZip (http://www.winzip.com) in Windows

environment.

3. Save the unzipped files into a folder, for example, WMX4LR102.EXE & WMX4LR102.BIN.

4. Double click on the WMX4LR102.EXE, EZWinFlash will detect the model name and BIOS version of your motherboard.

If you had got the wrong BIOS, you will not be allowed to proceed with the flash steps.

5. You may select preferred language in the main menu, then click [Start Flash] to start the BIOS upgrade procedure.

6. EZWinFlash will complete all the process automatically, and a dialogue box will pop up to ask you to restart Windows.

You may click [YES] to reboot Windows.

7. Press <Del> at POST to enter BIOS setup, choose "Load Setup Defaults", then “Save & Exit Setup”. Done!

It is strongly recommended NOT to turn off the power or run any application during FLASH PROCESS.

Warning: The new BIOS upgrade will

permanently replace your original

BIOS’s settings when flashing. You

may need to reconfigure your BIOS

setting so that your system can go

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OOvveerrcclloocckkiinngg

As a leading manufacturer in motherboard industry, AOpen always listens to what customers want and develop products to fit

different user's requirements. Reliability, compatibility, leading technology and friendly features are our basic goals when

designing motherboards. Other than above mentioned design criteria, there are power users who are always seeking to push

the limitation of the system performance by overclocking which we call them "Overclocker".

This section is dedicated to overclockers.

This high performance motherboard is designed for maximum 400MHz CPU bus clock. But it comes with clock generator of

248MHz when we design it to accommodate with future CPU bus clock. Our lab test results showed that 120MHz is achievable

when proper setting and qualified components were presented. Not only that, the CPU clock ratio can be up to 24x that supports

almost all of Pentium

feel appropriate for this motherboard is 120MHz bus clock.

But not guaranty. ☺

Tip: Note that overclocking may also

cause thermal problem. Please make

sure that the cooling fan and the

heatsink were adequate to dissipate

excessive heat that's generated by

overclocking the CPU.

4 CPUs in the future and provides flexibility for overclockers. For your reference, the configuration we

Warning: The design of this product follows CPU and chipset vendor's

design guideline. Any attempts to push beyond product specification are

not recommended and you are taking your own risk to damage your

system or important data. Before doing overclocking, you must make sure

your components are able to tolerate such abnormal setting, especially

CPU, DRAMs, hard disks, and AGP VGA cards.

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VVGGAA CCaarrdd && HHaarrdd DDiisskk

VGA and HDD is key components for overclocking, for your reference, the following list are what have been successful

overclocked in our lab. Please note that AOpen can not guaranty they can be successful overclocked again. Please check the

Available Vendor List (AVL) by link to our official website.

VGA: http://www.aopen.com/tech/report/overclk/mb/vga-oc.htm

HDD: http://www.aopen.com/tech/report/overclk/mb/hdd-oc.htm

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GGlloossssaarryy

AACC9977

Basically, AC97 specification separates sound/modem circuit to two parts, digital processor and a CODEC for analogy I/O they

are linked by AC97 link bus. Since digital processor can be put into motherboard main chipset, the cost of sound/modem

onboard solution can be reduced.

AACCPPII ((AAddvvaanncceedd CCoonnffiigguurraattiioonn && PPoowweerr IInntteerrffaaccee))

ACPI is the power management specification of PC97 (1997). It intends to save more power by taking full control of power

management to operating system and bypass BIOS

to operating system (such as Windows 98). This is a bit similar as the PnP

power switch to control the power state transition.

AAGGPP ((AAcccceelleerraatteedd GGrraapphhiicc PPoorrtt))

AGP is a bus interface targeted for high-performance 3D graphic. AGP supports only memory read/write operation and

single-master single-slave one-to-one only. AGP uses both rising and falling edge of the 66MHz clock, for 2X AGP, the data

transfer rate is 66MHz x 4byte x 2 = 528MB/s. AGP is now moving to 4X mode, 66MHz x 4byte x 4 = 1056MB/s. AOpen is the

first company to support 4X AGP motherboards by both AX6C (Intel 820) and MX64/AX64 (VIA 694x), started from Oct 1999.

. The chipset or super I/O chip needs to provide standard register interface

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AAMMRR ((AAuuddiioo//MMooddeemm RRiisseerr))

The CODEC circuit of AC97 sound/modem solution can be put on motherboard or put on a riser card (AMR card) that connects

to motherboard through AMR connector.

AAOOppeenn BBoonnuuss PPaacckk CCDD

A disc bundled with AOpen motherboard product; there are motherboard drivers, Acrobat Reader for PDF online manual and

other useful utilities.

AAPPMM ((AAddvvaanncceedd PPoowweerr MMaannaaggeemmeenntt))

Unlike ACPI, BIOS controls most APM power management functions. AOpen Suspend to Hard Drive is a good example of APM

power management.

AATTAA ((AATT AAttttaacchhmmeenntt))

ATA is the specification of diskette interface. In 80’s, many software and hardware manufacturers instituted the ATA specification

together. The AT is meaning International Business Machines Corporation (IBM) personal computer/AT’s bus structure.

AATTAA//6666

ATA/66 uses both rising edge and falling edge but doubles UDMA/33 transfer rate. The data transfer rate is 4 times of the PIO

mode 4 or DMA mode 2, 16.6MB/s x4 = 66MB/s. To use ATA/66, you need special ATA/66 IDE cable.

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AATTAA//110000

ATA/100 is a new IDE specification under developing. ATA/100 uses both rising edge and falling edge as ATA/ 6 6 but clock cycle

time is reduced to 40ns. The data transfer rate is (1/40ns) x 2 bytes x 2 = 100MB/s. To use ATA/100, you need special 80-wire

IDE cable, the same as ATA/66.

AATTAA//113333

ATA/133 is a new IDE specification under developing. ATA/133 uses both rising edge and falling edge as ATA/ 6 6 but clock cycle

time is reduced to 30ns. The data transfer rate is (1/30ns) x 2 bytes x 2 = 133MB/s. To use ATA/133, you need special 80-wire

IDE cable, the same as ATA/66.

BBIIOOSS ((BBaassiicc IInnppuutt//OOuuttppuutt SSyysstteemm))

BIOS is a set of assembly routine/program that reside in EPROM or Flash ROM. BIOS controls Input/output devices and other

hardware devices of motherboard. In general, to provide hardware independent portability, operation system and drivers is

required to access BIOS without directly access hardware devices.

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BBuuss MMaasstteerr IIDDEE ((DDMMAA mmooddee))

The traditional PIO (Programmable I/O) IDE requires the CPU to involve in all the activities of the IDE access including waiting

for the mechanical events. To reduce the workload of the CPU, the bus master IDE device transfers data from/to memory

without interrupting CPU, and releases CPU to operate concurrently while data is transferring between memory and IDE device.

You need the bus master IDE driver and the bus master IDE HDD to support bus master IDE mode.

CCNNRR ((CCoommmmuunniiccaattiioonn aanndd NNeettwwoorrkkiinngg RRiisseerr))

The CNR specification provides the PC industry the opportunity to deliver a flexible and cost reduced method of implementing

LAN, home networking, DSL, USB, wireless, audio and modem subsystems widely used in today's "connected PCs". The CNR

specification is an open industry specification and is supported by OEMs, IHV card manufacturers, silicon supplier and

Microsoft.

CCOODDEECC ((CCooddiinngg aanndd DDeeccooddiinngg))

Normally, CODEC means a circuit that can do digital to analog conversion and also the analog to digital conversion. It is part of

sound/modem solution.

AC97

DDDDRR ((DDoouubbllee DDaattaa RRaatteedd)) SSDDRRAAMM

DDR SDRAM utilizes the existing DRAM infrastructure and technology while doubling the nominal bandwidth available to

systems in an easy to design and simple to adopt way. Initially a perfect solution for memory intensive server and workstation

applications, DDR low cost and low voltage will ultimately make it an ideal solution for all segments of the PC market, high

performance desktop and mobile PCs, Value PCs and even Internet Appliances and mobile devices.

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DDIIMMMM ((DDuuaall IInn LLiinnee MMeemmoorryy MMoodduullee))

DIMM socket has total 168-pin and supports 64-bit data. It can be single or double side, the golden finger signals on each side

of PCB are different, and that is why it was called Dual In Line. Almost all DIMMs are made by SDRAM

Note that some old DIMMs are made by FPM/EDO

DDMMAA ((DDiirreecctt MMeemmoorryy AAcccceessss))

Channel for communications between the memory and surrounding devices.

EECCCC ((EErrrroorr CChheecckkiinngg aanndd CCoorrrreeccttiioonn))

The ECC mode needs 8 ECC bits for 64-bit data. Each time memory is accessed; ECC bits are updated and checked by a

special algorithm. The ECC algorithm has the ability to detect double-bit error and automatically correct single-bit error while

parity mode can only detect single-bit error.

EEDDOO ((EExxtteennddeedd DDaattaa OOuuttppuutt)) MMeemmoorryy

The EDO DRAM technology is actually very similar to FPM (Fast Page Mode). Unlike traditional FPM that tri-states the memory

output data to start the pre-charge activity, EDO DRAM holds the memory data valid until the next memory access cycle, that is

similar to pipeline effect and reduces one clock state.

, which operate at 3.3V.

and only operate at 5V. Do not confuse them with SDRAM DIMM.

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EEEEPPRROOMM ((EElleeccttrroonniicc EErraassaabbllee PPrrooggrraammmmaabbllee RROOMM))

Also known as E2PROM. Both EEPROM and Flash ROM can be re-programmed by electronic signals, but the interface

technology is different. Size of EEPROM is much smaller than flash ROM.

EEPPRROOMM ((EErraassaabbllee PPrrooggrraammmmaabbllee RROOMM))

Traditional motherboard stores BIOS code in EPROM. EPROM can only be erased by ultra-violet (UV) light. If BIOS has to be

upgraded, you need to remove EPROM from motherboard, clear by UV light, re-program, and then insert back.

EEVV66 BBuuss

EV6 Bus in the technology of Alpha processor from Digital Equipment Corporation. EV6 bus uses both rising and falling clock

edge to transfer data, similar as DDR SDRAM or ATA/66 IDE bus.

EV6 Bus Speed = CPU external bus clock x 2.

For example, 200 MHz EV6 bus is actually using 100 MHz external bus clock, but the equivalent speed is 200 MHz.

FFCCCC DDooCC ((DDeeccllaarraattiioonn ooff CCoonnffoorrmmiittyy))

The DoC is component certification standard of FCC EMI regulations. This standard allows DIY component (such as

motherboard) to apply DoC label separately without a shielding of housing.

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FFCC--PPGGAA ((FFlliipp CChhiipp--PPiinn GGrriidd AArrrraayy))

FC means Flip Chip, FC-PGA is a new package of Intel for Pentium III CPU. It can plug into SKT370 socket, but require

motherboard to add some signals on socket 370. That is, the motherboard needs to be redesigned. Intel is going to ship

FC-PGA 370 CPU and phase out slot1 CPU.

FFllaasshh RROOMM

Flash ROM can be re-programmed by electronic signals. It is easier for BIOS to upgrade by a flash utility, but it is also easier to

be infected by virus. Because of increase of new functions, BIOS size is increased from 64KB to 256KB (2M bit). AOpen AX5T is

the first board to implement 256KB (2Mbit) Flash ROM. Now flash ROM size is moving to 4M bit on AX6C (Intel 820) and MX3W

(Intel 810) motherboard. , AOpen motherboard uses EEPROM for jumper-less and battery-less design.

FFSSBB ((FFrroonntt SSiiddee BBuuss)) CClloocckk

FSB Clock means CPU external bus clock.

CPU internal clock = CPU FSB Clock x CPU Clock Ratio

CC BBuuss

See SMBus.

MMXX44LLRR OOnnlliinnee MMaannuuaall

IIEEEEEE 11339944

IEEE 1394 is a low-cost digital interface originated by Apple Computer as a desktop LAN and developed by the IEEE 1394

working group. The IEEE 1394 can transport data at 100, 200 or 400 Mbps. One of the solutions to connect digital television

devices together at 200 Mbps. Serial Bus Management provides overall configuration control of the serial bus in the form of

optimizing arbitration timing, guarantee of adequate electrical power for all devices on the bus, assignment of isochronous

channel ID, and notification of errors. There are two type of IEEE 1394 data transfer: asynchronous and isochronous.

Asynchronous transport is the traditional computer memory-mapped, load and store interface. Data requests are sent to a

specific address and an acknowledgment is returned. In addition to an architecture that scales with silicon technology, IEEE

1394 features a unique isochronous data channel interface. Isochronous data channels provide guaranteed data transport at a

pre-determined rate. This is especially important for time-critical multimedia data where just-in-time delivery eliminates the need

for costly buffering.

PPaarriittyy BBiitt

The parity mode uses 1 parity bit for each byte, normally it is even parity mode, that is, each time the memory data is updated,

parity bit will be adjusted to have even count "1" for each byte. When next time, if memory is read with odd number of "1", the

parity error is occurred and this is called single bit error detection.

PPBBSSRRAAMM ((PPiippeelliinneedd BBuurrsstt SSRRAAMM))

For Socket 7 CPU, one burst data read requires four QWord (Quad-word, 4x16 = 64 bits). PBSRAM only needs one address

decoding time and automatically sends the remaining QWords to CPU according to a predefined sequence. Normally, it is

3-1-1-1, total 6 clocks, which is faster than asynchronous SRAM. PBSRAM is often used on L2 (level 2) cache of Socket 7 CPU.

Slot 1 and Socket 370 CPU do not need PBSRAM.

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PPCC--110000 DDIIMMMM

SDRAM DIMM that supports 100MHz CPU FSB bus clock.

PPCC--113333 DDIIMMMM

SDRAM DIMM that supports 133MHz CPU FSB bus clock.

PPCC--11660000 oorr PPCC--22110000 DDDDRR DDRRAAMM

Based on FSB frequency, the DDR DRAM has 200MHz and 266MHz two type of working frequency. Because of DDR DRAM

data bus is 64-bit, it provides data transfer bandwidth up to 200x64/8=1600MB/s, and 266x64/8=2100MB/s. Hence, the PC-1600

DDR DRAM is working with 100MHz and PC-2100 DDR DRAM is working with 133MHz FSB frequency.

PPCCII ((PPeerriipphheerraall CCoommppoonneenntt IInntteerrffaaccee)) BBuuss

Bus for the internal connection of peripheral devices, high-speed data channel between the computer and expansion card.

PPDDFF FFoorrmmaatt

A file format for electronic document, PDF format is independent from platform, you can read PDF file under Windows, Unix,

Linux, Mac … with different PDF reader. You can also read PDF file by web browser such as IE and Netscape, note that you

need to install PDF plug-in first (Included in Acrobat Reader).

MMXX44LLRR OOnnlliinnee MMaannuuaall

PPnnPP ((PPlluugg aanndd PPllaayy))

The PnP specification suggests a standard register interface for both BIOS and operating system (such as Windows 95). These

registers are used by BIOS and operating system to configure system resource and prevent any conflicts. PnP BIOS or

operating system will automatically allocate the IRQ/DMA/Memory. Currently, almost all the PCI cards and most ISA cards are

already PnP compliant.

PPOOSSTT ((PPoowweerr--OOnn SSeellff TTeesstt))

The BIOS self-test procedure after power-on, sometimes, it is the first or the second screen shown on your monitor during

system boot.

RRDDRRAAMM ((RRaammbbuuss DDRRAAMM))

Rambus is a memory technology that uses large burst mode data transfer. Theoretically, the data transfer should be high than

SDRAM

channel, and this channel may have maximum 32 RDRAM devices, no matter how many RIMM

. RDRAM is cascaded in channel operation. For Intel 820, only one RDRAM channel is supported, 16-bit data per

RRIIMMMM ((RRaammbbuuss IInnlliinnee MMeemmoorryy MMoodduullee))

184-pin memory module that supports RDRAM memory technology. A RIMM memory module may contain up to maximum of 16

RDRAM devices.

sockets.

MMXX44LLRR OOnnlliinnee MMaannuuaall

SSDDRRAAMM ((SSyynncchhrroonnoouuss DDRRAAMM))

SDRAM is one of the DRAM technologies that allow DRAM to use the same clock as the CPU host bus (EDO and FPM are

asynchronous and do not have clock signal). It is similar as PBSRAM

168-pin DIMM

SShhaaddooww E

A memory space in Flash-ROM to simulate E2PROM operation, AOpen motherboard uses Shadow E2PROM for jumper-less and

battery-less design

and operates at 3.3V. AOpen is the first company to support dual-SDRAM DIMMs onboard (AP5V), from Q1 1996

PPRROOMM

SSIIMMMM ((SSiinnggllee IInn LLiinnee MMeemmoorryy MMoodduullee))

SIMM socket is only 72-pin, and is only single side. The golden finger signals on each side of PCB are identical. That is why it

was called Single In Line. SIMM is made by FPM or EDO

current motherboard design.

SSMMBBuuss ((SSyysstteemm MMaannaaggeemmeenntt BBuuss))

SMBus is also called I2C bus. It is a two-wire bus developed for component communication (especially for semiconductor IC).

For example, set clock of clock generator for jumper-less motherboard. The data transfer rate of SMBus is only 100Kbit/s, it

allows one host to communicate with CPU and many masters and slaves to send/receive message.

to use burst mode transfer. SDRAM comes in 64-bit

DRAM and supports 32-bit data. SIMM had been phased out on

MMXX44LLRR OOnnlliinnee MMaannuuaall

SSPPDD ((SSeerriiaall PPrreesseennccee DDeetteecctt))

SPD is a small ROM or EEPROM device resided on the DIMM or RIMM. SPD stores memory module information such as DRAM

timing and chip parameters. SPD can be used by BIOS

UUllttrraa DDMMAA

Ultra DMA (or, more accurately, Ultra DMA/33) is a protocol for transferring data between a hard disk drive through the

computer’s data path (or bus) to the computer’s random access memory (RAM). The Ultra DMA/33 protocol transfers data in

burst mode at a rate of 33.3MB/s, twice as fast as the previous Direct Access Memory (DMA)

developed as a proposed industry standard by the Quantum corporation, makes of hard disk drives, and Intel, makes of chipset

that support computer bus technology. Ultra DMA support in your computer means that it will boot (start) and open new

applications more quickly. It will help users of graphic-intensive and applications that require large amounts of access to data on

the hard disk drive. Ultra DMA uses Cyclical Redundancy Checking (CRC), offering a new level of data protection. Ultra DMA

uses the same 40-pin IDE interface cable as PIO and DMA.

16.6MB/s x2 = 33MB/s

16.6MB/s x4 = 66MB/s

16.6MB/s x6 = 100MB/s

UUSSBB ((UUnniivveerrssaall SSeerriiaall BBuuss))

USB is a 4-pin serial peripheral bus that is capable of cascading low/medium speed peripherals (less than 10Mbit/s) such as

keyboard, mouse, joystick, scanner, printer and modem. With USB, the traditional complex cables from back panel of your PC

can be eliminated.

to decide best timing for this DIMM or RIMM.

interface. Ultra DMA was

MMXX44LLRR OOnnlliinnee MMaannuuaall

VVCCMM ((VViirrttuuaall CChhaannnneell MMeemmoorryy))

NEC’s Virtual Channel Memory (VCM) is a new DRAM core architecture that dramatically improves the memory system’s ability

to service multimedia requirements. VCM increases memory bus efficiency and performance of any DRAM technology by

providing a set of fast static registers between the memory core and I/O pins. Using VCM technology results in reduced data

access latency and reduced power consumption.

ZZIIPP ffiillee

A compressed file format to reduce file size. To unzip file, run shareware PKUNZIP (http://www.pkware.com/) for DOS and other

operating system or WINZIP (http://www.winzip.com/

) for windows environment.

MMXX44LLRR OOnnlliinnee MMaannuuaall

TTrroouubblleesshhoooottiinngg

If you encounter any trouble to boot you system, follow the procedures accordingly to resolve the problem.

Start

Turn off the power and unplug the AC power cable, then remove all of the

add-on cards and cables, including VGA, IDE, FDD, COM1, COM2 and

printer.

Make sure if all jumper settings are correct.

Clear CMOS

100

AOpen MX4LR User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual