ASRock A785GM-LE User Manual

No part of this installation guide may be reproduced, transcribed, transmitted, or translated in any language, in any form or by any means, except duplication of documentation by the purchaser for backup purpose, without written consent of ASRock Inc. Products and corporate names appearing in this guide may or may not be registered trademarks or copyrights of their respective companies, and are used only for identification or explanation and to the owners’ benefit, without intent to infringe.

Disclaimer:Disclaimer:

Disclaimer:

Disclaimer:Disclaimer:

Specifications and information contained in this guide are furnished for informational use only and subject to change without notice, and should not be constructed as a commitment by ASRock. ASRock assumes no responsibility for any errors or omissions that may appear in this guide. With respect to the contents of this guide, ASRock does not provide warranty of any kind, either expressed or implied, including but not limited to the implied warranties or conditions of merchantability or fitness for a particular purpose. In no event shall ASRock, its directors, officers, employees, or agents be liable for any indirect, special, incidental, or consequential damages (including damages for loss of profits, loss of business, loss of data, interruption of business and the like), even if ASRock has been advised of the possibility of such damages arising from any defect or error in the guide or product.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that

may cause undesired operation.

CALIFORNIA, USA ONLY

The Lithium battery adopted on this motherboard contains Perchlorate, a toxic substance controlled in Perchlorate Best Management Practices (BMP) regulations passed by the California Legislature. When you discard the Lithium battery in California, USA, please follow the related regulations in advance. “Perchlorate Material-special handling may apply, see www.dtsc.ca.gov/hazardouswaste/perchlorate”

ASRock Website: http://www.asrock.com

Published August 2009

ASRock A785GM-LE Motherboard

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Motherboard LayoutMotherboard Layout

Motherboard Layout

Motherboard LayoutMotherboard Layout

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CPU_FAN1

DDRII_2 (64bit, 240-pin module)

PWR_FAN1

SATAII_4(SATAII_5 SATAII_6 PORT3) (PORT4) (PORT 5)

SATAII_1(SATAII_2 SATAII_3 PORT0) (PORT1) (PORT 2)

1920

CMOS

BATTERY

CLRCMOS1

IDE1

RoHS

SPEAKER1

PLEDPWRBTN

PANEL1

HDLED RESET

ATXPWR1

24.4cm (9.6-in)

12 13

14 15 16

Keyboard

Mouse

PS2

PS2_USB_PW1

VGA1

ATX12V1

DVI_CON1

19.8cm (7.8-in)

SOCKET AM2

EuP Ready

USB2.0 T:USB2 B:USB3

USB2.0 T:USB4 B:USB5

USB2.0 T:USB0 B:USB1

Bottom:

MIC IN

FRONT

AUDIO

CODEC

30 29 28

LPT1

COM1

Top:

RJ-45

Top:

LINE IN

Center:

LAN

PCIE1

Super

I/O

CD1

HD_AUDIO1

IR1

FLOPPY1

2627

Hybrid CrossFire

HT3.0

AMD 785G

Chipset

A785GM-LE

PCIE2

PCI1

PCI2

USB10_11

Phenom II

DDR2 1066

AM2+/AM3

8Mb BIOS

USB8_9

Dual Channel

FSB800

DDRII_1 (64bit, 240-pin module)

FSB2.6GHz

AMD

SB710

Chipset

CHA_FAN1

USB6_7

1 A TX 12V Power Connector (A TX12V1) 19 Primary SAT AII Connector 2 PS2_USB_PW1 Jumper (SA T AII_1 (PORT 0)) 3 CPU Heatsink Retention Module 20 Chassis Fan Connector (CHA_FAN1) 4 AM2 940-Pin CPU Socket 21 USB 2.0 Header (USB6_7, Blue) 5 2 x 240-pin DDR2 DIMM Slots 22 SPI Flash Memory (8Mb)

(Dual Channel A: DDRII_1, DDRII_2; Yellow) 23 USB 2.0 Header (USB8_9, Blue) 6 CPU Fan Connector (CPU_FAN1) 24 USB 2.0 Header (USB10_11, Blue) 7 Power Fan Connector (PWR_FAN1) 25 Floppy Connector (FLOPPY1) 8 ATX Power Connector (ATXPWR1) 26 Infrared Module Header (IR1) 9 Clear CMOS Jumper (CLRCMOS1) 27 Print Port Header (LPT1, Purple) 10 Primary IDE Connector (IDE1, Blue) 28 Front Panel Audio Header 11 Sixth SAT AII Connector (SATAII_6 (PORT 5)) (HD_AUDIO1, Lime) 12 Fifth SAT AII Connector (SATAII_5 (PORT 4)) 29 Internal Audio Connector: CD1 (Black) 13 Fourth SA TAII Connector (SA TAII_4 (PORT 3)) 30 PCI Slots (PCI1- 2) 14 Southbridge Controller 31 PCI Express 2.0 x16 Slot (PCIE2; Green) 15 Chassis Speaker Header 32 PCI Express 2.0 x1 Slot (PCIE1; Green)

(SPEAKER 1, Purple) 33 Northbridge Controller 16 System Panel Hea der (P ANEL1, Orange) 34 Serial Port Connector (COM1) 17 Third SAT AII Connector (SATAII_3 (PORT 2)) 18 Secondary SAT AII Connector (SA TAII_2 (PORT 1))

ASRock A785GM-LE Motherboard

I/O PI/O P

I/O P

I/O PI/O P

* 4 RJ-45 Port 10 USB 2.0 Ports (USB23)

* There are two LED next to the LAN port. Please refer to the table below for the LAN port LED indications.

anelanel

anel

anelanel

1 PS/2 Mouse Port (Green) 7 Microphone (Pink) 2 VGA/D-Sub Port 8 USB 2.0 Ports (USB01) 3 VGA/D VI-D Port 9 USB 2.0 Ports (USB45)

5 Line In (Light Blue) 11 PS/2 Keyboard Port (Purple) 6 Front Speaker (Lime)

Activity/Link LED SPEED LED

Status Description Status Description

Off No Link Off 10Mbps connection Blinking Data Activity Orange 100Mbps connection On Link Green 1Gbps connection

LAN Port LED Indications

ACT/LINK LED

LAN Port

SPEED LED

To enable Multi-Streaming function, you need to connect a front panel audio cable to the front panel audio header. Please refer to below steps for the software setting of Multi-Streaming. For Windows® XP: After restarting your computer, you will find “Mixer” tool on your system. Please select “Mixer ToolBox” , click “Enable playback multi-streaming”, and click “ok”. Choose “2CH” or

“4CH” and then you are allowed to select “Realtek HDA Primary output” to use Rear Speaker and Front Speaker, or select “Realtek HDA Audio 2nd output” to use front panel audio. Then reboot your system. For Windows® VistaTM: After restarting your computer, please double-click “Realtek HD Audio Manager” on the system tray. Set “Speaker Configuration” to “Quadraphonic” or “Stereo”. Click “Device advanced settings”, choose “Make front and rear output devices playbacks two different audio streams simultaneously”, and click “ok”. Then reboot your system.

ASRock A785GM-LE Motherboard

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1.1.

IntroductionIntroduction

Introduction

1.1.

IntroductionIntroduction

Thank you for purchasing ASRock A785GM-LE motherboard, a reli able motherboard produced under ASRock’s consistently stringent quality control. It delivers excellent performance with robust design conforming to ASRock’s commitment to quality and endurance. In this manual, cha pter 1 a nd 2 contain introduction of the motherboard a nd step-by-step guide to the hardware installation. Chapter 3 and 4 contain the configuration guide to BIOS setup and information of the Support CD.

Because the motherboard specifications and the BIOS software might be updated, the content of this manual will be subject to change without notice. In case any modifications of this manual occur, the updated version will be available on ASRock website without further notice. You may find the latest VGA cards and CPU support lists on ASRock website as well. ASRock website http://www.asrock.com If you require technical support related to this motherboard, please visit our website for specific information about the model you are using.

www.asrock.com/support/index.asp

1.11.1

Package ContentsPackage Contents

1.1

Package Contents

1.11.1

Package ContentsPackage Contents

1 x ASRock A785GM-LE Motherboard

(Micro ATX Form Factor: 9.6-in x 7.8-in, 24.4 cm x 19.8 cm) 1 x ASRock A785GM-LE Quick Installation Guide 1 x ASRock A785GM-LE Support CD 1 x Ultra ATA 66/100/133 IDE Ribbon Cable (80-conductor) 1 x I/O Shield

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ASRock A785GM-LE Motherboard

1.21.2

SpecificationsSpecifications

1.2

Specifications

1.21.2

SpecificationsSpecifications

Platform - Micro ATX Form Factor: 9.6-in x 7.8-in, 24.4 cm x 19.8 cm CPU - Support for Socket AM2+ / AM2 processors: AMD Phenom

FX / Phenom / Athlon 64 FX / Athlon 64 X2 Dual-Core / Athlon X2 Dual-Core / Athlon 64 / Sempron processor

- Support for AM3 processors: AMD PhenomTM II X4 / X3 and Athlon II X4 / X3 / X2 processors

- Supports AMD OverDriveTM with ACC feature (Advanced Clock Calibration)

- Supports AMD’s Cool ‘n’ QuietTM Technology

- FSB 2600 MHz (5.2 GT/s)

- Supports Untied Overclocking Technology (see CAUTION 1)

- Supports Hyper-Transport 3.0 (HT 3.0) Technology

Chipset - Northbridge: AMD 785G

- Southbridge: AMD SB710

Memory - Dual Channel DDR2 Memory Technology (see CAUTION 2)

- 2 x DDR2 DIMM slots

- Support DDR2 1066/800/667/533 non-ECC, un-buffered memory (see CAUTION 3)

- Max. capacity of system memory: 8GB (see CAUTION 4)

Expansion Slot - 1 x PCI Express 2.0 x16 slot (green @ x16 mode)

- 1 x PCI Express 2.0 x1 slot

- 2 x PCI slots

- Supports ATITM Hybrid CrossFireX

Graphics - Integrated AMD Radeon HD 4200 graphics

- D X10.1 class iGPU, Shader Modle 4.1

- Max. shared memory 512MB (see CAUTION 5)

- Dual VGA Output: support DVI-D and D-Sub ports by independent display controllers

- Supports HDCP function with DVI-D port

- Supports Full HD 1080p Blu-ray (BD) / HD-DVD playback (see CAUTION 6)

Audio - 5.1 CH Windows® VistaTM Premium Level HD Audio

(ALC662 Audio Codec)

LAN - PCIE x1 Giga bit LAN 10/100/1000 Mb/s

- Realtek RTL81 11DL

- Supports Wake-On-LAN

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ASRock A785GM-LE Motherboard

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Rear Panel I/O I/O Panel

- 1 x PS/2 Mouse Port

- 1 x PS/2 Keyboard Port

- 1 x VGA/D-Sub Port

- 1 x VGA/DVI-D Port

- 6 x Ready-to-Use USB 2.0 Ports

- 1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED)

- HD Audio Jack: Line in/Front Speaker/Microphone

Connector - 6 x Serial ATAII 3.0Gb/s connectors, support RAID (RAID 0,

RAID 1, RAID 10 and JBOD), NCQ, AHCI a nd “Hot Plug” functions (see CAUTION 7)

- 1 x ATA133 IDE connector (supports 2 x IDE devices)

- 1 x Floppy connector

- 1 x IR header

- 1 x Print port header

- 1 x COM port header

- CPU/Chassis/Power FAN connector

- 24 pin ATX power connector

- 4 pin 12V power connector

- CD in header

- Front panel audio connector

- 3 x USB 2.0 headers (support 6 USB 2.0 ports) (see CAUTION 8)

BIOS Feature - 8Mb AMI BIOS

- AMI Legal BIOS

- Supports “Plug and Play”

- ACPI 1.1 Compli ance Wa ke Up Events

- Supports jumperfree

- SMBIOS 2.3.1 Support

- VCCM, NB Voltage Multi-a djustment

- Supports Smart BIOS

Support CD - Drivers, Utilities, AntiVirus Software (Trial V ersion), AMD

OverDriveTM Utility, AMD Live! Explorer, AMD Fusion

Unique Feature - ASRock OC Tuner (see CAUTION 9)

- Intelligent Energy Saver (see CAUTION 10)

- Instant Boot

- ASRock Instant Flash (see CAUTION 11)

- ASRock OC DNA (see CAUTION 12)

- Hybrid Booster:

- CPU Frequency Stepless Control (see CAUTION 13)

- ASRock U-COP (see CAUTION 14)

- Boot Failure Guard (B.F.G.)

ASRock A785GM-LE Motherboard

- ASRock AM2 Boost: ASRock Patented T echnology to boost

memory performance up to 12.5% (see CAUTION 15) Hardware - CPU Temperature Sensing Monitor - Chassis Temperature Sensing

- CPU/Chassis/Power Fan Tachometer

- CPU Quiet Fan

- Voltage Monitoring: +12V, +5V, +3.3V, Vcore

OS - Microsoft® Windows® XP / XP Media Center / XP 64-bit /

Vista

/ VistaTM 64-bit / Win7 compliant

Certifications - FCC, CE, WHQL

- EuP Ready (EuP ready power supply is required) (see CAUTION 16)

* For detailed product information, please visit our website: http://www.asrock.com

WA R NING

Please realize that there is a certain risk involved with overclocking, including adjusting the setting in the BIOS, applying Untied Overclocking Technology, or using the third-party overclocking tools. Overclocking may affect your system stability, or even cause damage to the components and devices of your system. It should be done at your own risk and expense. We are not responsible for possible damage caused by overclocking.

CAUTION!

1. This motherboard supports Untied Overclocking Technology. Please read “Untied Overclocking Technology” on page 27 for details.

2. This motherboard supports Dual Channel Memory Technology. Before you implement Dual Channel Memory Technology, make sure to read the installation guide of memory modules on page 13 for proper installation.

3. Whether 1066MHz memory speed is supported depends on the AM2+ CPU you adopt. If you want to adopt DDR2 1066 memory module on this motherboard, please refer to the memory support list on our website for the compatible memory modules. ASRock website http://www.asrock.com

4. Due to the operating system limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows® XP and Windows® VistaTM. For Windows® XP 64-bit and Windows® Vista 64-bit with 64-bit CPU, there is no such limitation.

5. The maximum shared memory size is defined by the chipset vendor and is subject to change. Please check AMD website for the latest information.

6. 1080p Blu-ray (BD) / HD-DVD playback support on this motherboard requires the proper hardware configuration. Please refer to page 9 and 10 for the minimum hardware requirement and the passed 1080p Blu-ray (BD) / HD-DVD films in our lab test.

ASRock A785GM-LE Motherboard

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7. Before installing SAT AII hard dis k to SATAII connector, please rea d the “SATAII

Hard Disk Setup Guide” on page 29 of “User Manual” in the support CD to adjust your SA TAII hard disk drive to SATAII mode. You can also connect SATA hard disk to SATAII connector directly.

8. Power Management for USB 2.0 works fine under Microsoft® Windows

VistaTM 64-bit / VistaTM / XP 64-bit / XP SP1 or SP2.

9. It is a user-friendly ASRock overclocking tool which allows you to surveil

your system by hardware monitor function and overclock your hardware devices to get the best system performance under Windows environment. Please visit our website for the operation procedures of ASRock OC Tuner. ASRock website: http://www.asrock.com

10. Featuring an advanced proprietary hardware and software design,

Intelligent Energy Saver is a revolutionary technology that delivers unparalleled power savings. The voltage regulator can reduce the number of output phases to improve efficiency when the CPU cores are idle. In other words, it is able to provide exceptional power saving and improve power efficiency without sacrificing computing performance. To use Intelligent Energy Saver function, please enable Cool ‘n’ Quiet option in the BIOS setup in advance. Please visit our website for the operation procedures of Intelligent Energy Saver. ASRock website: http://www.asrock.com

11. ASRock Instant Flash is a BIOS flash utility embedded in Flash ROM.

This convenient BIOS update tool allows you to update system BIOS without entering operating systems first like MS-DOS or Windows®. With this utility, you can press <F6> key during the POST or press <F2> key to BIOS setup menu to access ASRock Instant Flash. Just launch this tool and save the new BIOS file to your USB flash drive, floppy disk or hard drive, then you can update your BIOS only in a few clicks without preparing an additional floppy diskette or other complicated flash utility. Please be noted that the USB flash drive or hard drive must use FAT32/16/12 file system.

12. The software name itself – OC DNA literally tells you what it is capable of.

OC DNA, an exclusive utility developed by ASRock, provides a convenient way for the user to record the OC settings and share with others. It helps you to save your overclocking record under the operating system and simplifies the complicated recording process of overclocking settings. With OC DNA, you can save your OC settings as a profile and share with your friends! Your friends then can load the OC profile to their own system to get the same OC settings as yours! Please be noticed that the OC profile can only be shared and worked on the same motherboard.

13. Although this motherboard offers stepless control, it is not recommended

to perform over-clocking. Frequencies other than the recommended CPU bus frequencies may cause the instability of the system or damage the CPU.

14. While CPU overheat is detected, the system will automatically shutdown.

Before you resume the system, please check if the CPU fan on the motherboard functions properly and unplug the power cord, then plug it back again. To improve heat dissipation, remember to spray thermal grease between the CPU a nd the he atsink when you install the PC syste m.

ASRock A785GM-LE Motherboard

15. This motherboard supports ASRock AM2 Boost overclocking technology. If you enable this function in the BIOS setup, the memory performance will improve up to 12.5%, but the effect still depends on the AM2 CPU you adopt. Enabling this function will overclock the chipset/CPU reference clock. However, we can not guarantee the system stability for all CPU/DRAM configurations. If your system is unstable after AM2 Boost function is enabled, it may not be applicative to your system. You may choose to disable this function for keeping the stability of your system.

16. EuP, stands for Energy Using Product, wa s a provision regulated by European Union to define the power consumption for the completed system. According to EuP, the total AC power of the completed system shall be under 1.00W in off mode condition. To meet EuP standard, an EuP ready motherboard a nd an EuP ready power supply are required. According to Intel’s suggestion, the EuP ready power supply must meet the standard of 5v standby power efficiency is higher than 50% under 100 mA current consumption. For EuP ready power supply selection, we recommend you checking with the power supply manufacturer for more details.

1.31.3

Minimum Hardware Requirement for 1080p Blu-rayMinimum Hardware Requirement for 1080p Blu-ray

1.3

Minimum Hardware Requirement for 1080p Blu-ray

1.31.3

Minimum Hardware Requirement for 1080p Blu-rayMinimum Hardware Requirement for 1080p Blu-ray

(BD) / HD(BD) / HD

(BD) / HD

(BD) / HD(BD) / HD

1080p Blu-ray (BD) / HD-DVD playba ck support on this motherboard requires the proper hardware configuration. Plea se refer to below table for the minimum hardware requirement.

CPU AMD Sempron Dual Core 2100 VGA Onboard VGA with DVI-D port Memory Dual Channel DDR2 533, 1GB x 2 Suggested OS Windows® VistaTM or Windows® VistaTM 64

-D-D

VD Playback SupporVD Playback Suppor

-D

VD Playback Suppor

-D-D

VD Playback SupporVD Playback Suppor

* If you need to use CyberLink PowerDVD Ultra version 7.3, we suggest to disable Hardware Acceleration function for better playback performance and compatibility. After executing CyberLink PowerDVD Ultra program, please follow below steps to disable Hardware Acceleration function. A. Right-click the main page of CyberLink PowerDVD Ultra program. B. Click “Configuration”. C. Select “Video”. D. Click “Enable hardware acceleration (ATI Avivo)” to remove the “V” mark in this item. E. Click “OK” to save the change. * Currently, 1080p Blu-ray (BD) / HD-DVD playback is only supported under Windows VistaTM / VistaTM 64-bit OS. If you install Windows® XP / XP 64-bit OS, the function of 1080p Blu-ray (BD) / HD-DVD playback is not available, please visit our website for AMD 785G VGA driver update in the future. ASRock website http://www.asrock.com

ASRock A785GM-LE Motherboard

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1.41.4

1.4

1.41.4

assed 1080p Blu-ray (BD) / HDassed 1080p Blu-ray (BD) / HD

assed 1080p Blu-ray (BD) / HD

assed 1080p Blu-ray (BD) / HDassed 1080p Blu-ray (BD) / HD

estest

est

estest

DVD Film Name Format Producer Type Blu-ray SWORDFISH VC-1 WB DVD UNDERWORLD EVOLUTION MPEG-2 SONY

THE LAST STAND MPEG-4-AVC FOX CASINO ROYALE MPEG-4-AVC SONY THE LEAGUE OF MPEG-4-AVC FOX

EXTRAORDINARY GENTLEMEN HD- KING KONG VC-1 UNIVERSAL DVD NEW ORLEANS CONCERT MPEG-2 WEA

THE INTERPRETER MPEG-4-AVC UNIVERSAL

* MPEG-4-AVC mentioned above refers to the same format of H.264. * Above passed films are tested under below configuration. Items Configurations CPU AMD Sempron Dual Core 2100 VG A Onboard V GA with DVI-D port Memory Dual Channel DDR2 533, 1GB x 2 OS Windows® VistaTM or Windows® VistaTM 64 Playback Software CyberLink PowerDVD Ultra (Version 7.3 or above) DVD Player Pioneer BDR-101A / LG GBW-H10N (BD)

HP HD100 (HD-DVD)

-D-D

-D

-D-D

VD FVD F

VD F

VD FVD F

ilms in Our Lilms in Our L

ilms in Our L

ilms in Our Lilms in Our L

abab

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ASRock A785GM-LE Motherboard

2.2.

InstallationInstallation

Installation

2.2.

InstallationInstallation

This is a Micro ATX form fa ctor (9.6-in x 7.8-in, 24.4 cm x 19.8 cm) motherboard. Before you install the motherboard, study the configuration of your chassis to ensure that the motherboard fits into it.

Pre-installation PrecautionsPre-installation Precautions

Pre-installation Precautions

Pre-installation PrecautionsPre-installation Precautions

Take note of the following precautions before you install motherboard components or change any motherboard settings.

Before you install or remove any component, ensure that the

power is switched off or the power cord is detached from the

power supply. Failure to do so may cause severe damage to the

motherboard, peripherals, and/or components.

1. Unplug the power cord from the wall socket before touching any component.

2. To avoid damaging the motherboard components due to static electricity, NEVER place your motherboard directly on the carpet or the like. Also remember to use a grounded wrist strap or touch a safety grounded object before you handle components.

3. Hold components by the edges and do not touch the ICs.

4. Whenever you uninstall any component, place it on a grounded antistatic pad or in the bag that comes with the component.

5. When placing screws into the screw holes to secure the motherboard to the chassis, please do not over-tighten the screws! Doing so may damage the motherboard.

ASRock A785GM-LE Motherboard

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2.12.1

CPU InstallationCPU Installation

2.1

CPU Installation

2.12.1

CPU InstallationCPU Installation

Step 1. Unlock the socket by lifting the lever up to a 90

angle.

Step 2. Position the CPU directly above the socket such that the CPU corner with

the golden triangle matches the socket corner with a small triangle.

Step 3. Carefully insert the CPU into the socket until it fits in place.

The CPU fits only in one correct orientation. DO NOT force the CPU into the socket to avoid bending of the pins.

Step 4. When the CPU is in place, press it firmly on the socket while you push

down the socket lever to secure the CPU. The lever clicks on the side tab to indicate that it is locked.

Lever 90° Up

CPU Golden Triangle

Socket Corner Small Triangle

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STEP 1: Lift Up The Socket Lever

2.22.2

Installation of CPU Fan and HeatsinkInstallation of CPU Fan and Heatsink

2.2

Installation of CPU Fan and Heatsink

2.22.2

Installation of CPU Fan and HeatsinkInstallation of CPU Fan and Heatsink

STEP 2 / STEP 3: Match The CPU Golden Triangle To The Socket Corner Small Triangle

STEP 4: Push Down And Lock The Socket Lever

After you install the CPU into this motherboard, it is necessary to install a larger heatsink and cooling fan to dissipate heat. You also need to spray thermal grease between the CPU and the heatsink to improve heat dissipation. Make sure that the CPU and the heatsink are securely fastened and in good contact with each other. Then connect the CPU fan to the CPU FAN connector (CPU_FAN1, see Page 2, No. 6). For proper installation, please kindly refer to the instruction manuals of the CPU fan and the heatsink.

ASRock A785GM-LE Motherboard

2.3 Installation of Memory Modules (DIMM)2.3 Installation of Memory Modules (DIMM)

2.3 Installation of Memory Modules (DIMM)

2.3 Installation of Memory Modules (DIMM)2.3 Installation of Memory Modules (DIMM)

A785GM-LE motherboard provides two 240-pin DDR2 (Double Data Rate 2) DIMM slots, and supports Dual Cha nnel Me mory Technology. For dual channel configuration, you always need to install two identical (the same brand, speed, size and chiptype) memory modules in the DDR2 DIMM slots to activate Dual Channel Memory Technology. Otherwise, it will operate at single channel mode.

1. It is not allowed to install a DDR memory module into DDR2 slot; otherwise, this motherboard and DIMM may be damaged.

2. If you install only one memory module or two non-identical memory modules, it is unable to activate the Dual Channel Memory Technology.

Installing a DIMMInstalling a DIMM

Installing a DIMM

Installing a DIMMInstalling a DIMM

Please make sure to disconnect power supply before adding or removing DIMMs or the system components.

Step 1. Unlock a DIMM slot by pressing the retaining clips outward. Step 2. Align a DIMM on the slot such that the notch on the DIMM matches the brea k

on the slot.

The DIMM only fits in one correct orientation. It will cause permanent damage to the motherboard and the DIMM if you force the DIMM into the slot at incorrect orientation.

Step 3. Firmly insert the DIMM into the slot until the retaining cli ps at both ends fully

sna p back in place and the DIMM is properly seated.

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2.4 Expansion Slots (PCI and PCI Express Slots)2.4 Expansion Slots (PCI and PCI Express Slots)

2.4 Expansion Slots (PCI and PCI Express Slots)

2.4 Expansion Slots (PCI and PCI Express Slots)2.4 Expansion Slots (PCI and PCI Express Slots)

There are 2 PCI slots and 2 PCI Express slots on this motherboard. PCI slots: PCI slots are used to install expansion cards that have the 32-bit PCI

interface.

PCIE slots:

PCIE1 (PCIE x1 slot; Green) is used for PCI Expre ss cards with x1 lane width cards, such as Gigabit LAN card, SAT A2 card, etc. PCIE2 (PCIE x16 slot; Green) is used for PCI Expre ss cards with x16 lane width gra phics cards.

Installing an expansion cardInstalling an expansion card

Installing an expansion card

Installing an expansion cardInstalling an expansion card

Step 1. Before installing the expansion card, please make sure that the power supply

is switched off or the power cord is unplugged. Plea se read the documentation of the expansion card a nd ma ke necessary hardware settings for the card before you start the installation.

Step 2. Remove the bracket facing the slot that you intend to use. Keep the screws

for later use.

Step 3. Align the card connector with the slot and press firmly until the card is com-

pletely seated on the slot.

Step 4. Fasten the card to the chassis with screws.

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ASRock A785GM-LE Motherboard

+ 31 hidden pages

ASRock A785GM-LE User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual