ASROCK M3A785GXH128M 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 July 2009

ASRock M3A785GXH/128M Motherboard

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Motherboard LayoutMotherboard Layout

Motherboard Layout

Motherboard LayoutMotherboard Layout

1 ATX 12V Power Connector (ATX12V1) 23 Sixth SATAII Connector 2 PS2_USB_PW1 Jumper (SATAII_6, Orange) 3 CPU Fan Connector (CPU_FAN1) 24 Infrared Module Header (IR1) 4 SLI / XFIRE Power Connector 25 Clear CMOS Jumper (CLRCMOS1) 5 CPU Heatsink Retention Module 26 Front Panel IEEE 1394 Header 6 AM3 941-Pin CPU Socket (FRONT_1394) 7 2 x 240-pin DDR3 DIMM Slots 27 USB 2.0 Header (USB10_11, Blue)

(Dual Channel A: DDR3_A1, DDR3_B1; Blue) 28 USB 2.0 Header (USB6_7, Blue)

8 2 x 240-pin DDR3 DIMM Slots 29 USB 2.0 Header (USB8_9, Blue)

(Dual Channel B: DDR3_A2, DDR3_B2; White) 30 Chassis Fan Connector (CHA_FAN1) 9 ATX Power Connector (ATXPWR1) 31 Floppy Connector (FLOPPY1) 10 North Bridge Fan Connector (NB_FAN1) 32 Serial Port Connector (COM1) 11 Northbridge Controller 33 Front Panel Audio Header 12 Primary IDE Connector (IDE1, Blue) (HD_AUDIO1, Lime) 13 SLI/XFire Switch Card Retention Slot 34 Internal Audio Connector: CD1 (Black) 14 Southbridge Controller 35 HDMI_SPDIF Header 15 SPI Flash Memory (8Mb) (HDMI_SPDIF1, Yellow) 16 System Panel Header (PANEL1, Orange) 36 PCI Express 2.0 x16 Slot 17 Primary SATAII Connector (SATAII_1, Red) (PCIE4; Orange) 18 Secondary SATAII Connector (SATAII_2, Red) 37 PCI Slots (PCI1- 2) 19 Fourth SATAII Connector (SATAII_4, Red) 38 PCI Express 2.0 x16 Slot (PCIE3; Blue) 20 Third SATAII Connector (SAT AII_3, Red) 39 PCI Express 2.0 x16 Slot (PCIE2; Green) 21 Chassis Speaker Header 40 PCI Express 2.0 x1 Slot (PCIE1; Green)

(SPEAKER 1, Purple) 41 Power Fan Connector (PWR_FAN1) 22 Fifth SATAII Connector (SATAII_5, Red) 42 eSATAII Connector (eSATAII_TOP)

ASRock M3A785GXH/128M Motherboard

I/O PI/O P

I/O P

I/O PI/O P

* 4 LAN RJ-45 Port 13 eSATAII Port

** 9 Front Speaker (Lime)

* 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 Keyboard Port (Purple) 10 Microphone (Pink) 2 VGA/D-Sub Port 11 USB 2.0 Ports (USB01) 3 USB 2.0 Ports (USB23) 1 2 IEEE 1394 Port

5 Side Speaker (Gray) 14 Optical SPDIF Out Port 6 Rear Speaker (Black) *** 15 HDMI Port 7 Central / Bass (Orange) 16 VGA/DVI-D Port 8 Line In (Light Blue) 17 USB 2 .0 Ports (USB45)

Activity/Link LED SPEED LED

Status Description Status Description

Off No Activity Off 10Mbps connection Blinking Data Activity Orange 100Mbps connection

LAN Port LED Indications

Green 1Gbps connection

ACT/LINK LED

SPEED LED

LAN Port

** If you use 2-channel speaker, please connect the speaker’s plug into “Front Speaker Jack”.

See the table below for connection details in accordance with the type of speaker you use.

TABLE f or Audio Output Connection

Audio Output Channels Front Speaker Rear Sp eaker Central / Bass Side Speaker

(No. 9) (No. 6) (No. 7) (No. 5) 2 V -- -- -4VV---6 VVV-8 VVVV

*** To support AC3 or DTS audio format with HDMI Audio under VistaTM, please install the HDMI audio driver in XP support CD AAX785H-10. The driver is located under the path: ..\Drivers\NB Audio\REALTEK\XP64_XP(R1.68) And note for LPCM support up to stereo 2 channels only.

ASRock M3A785GXH/128M Motherboard

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1.1.

IntroductionIntroduction

Introduction

1.1.

IntroductionIntroduction

Thank you for purchasing ASRock M3A785GXH/128M motherboard, a reliable motherboard produced under ASRock’s consistently stringent quality control. It delivers excellent performance with robust design conf orming 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 M3A785GXH/128M Motherboard

(ATX Form Factor: 12.0-in x 8.8-in, 30.5 cm x 22.4 cm) 1 x ASRock M3A785GXH/128M Quick Installation Guide 2 x ASRock M3A785GXH/128M Support CD 1 x Ultra ATA 66/100/133 IDE Ribbon Cable (80-conductor) 1 x Ribbon Cable for a 3.5-in Floppy Drive 2 x Serial ATA (SATA) Data Cables (Optional) 1 x I/O Panel Shield 1 x ASRock SLI/XFire Switch Card

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ASRock M3A785GXH/128M Motherboard

1.21.2

SpecificationsSpecifications

1.2

Specifications

1.21.2

SpecificationsSpecifications

Platform - ATX Form Factor: 12.0-in x 8.8-in, 30.5 cm x 22.4 cm

- All Solid Capacitor design (100% Japan-made high-quality Conductive Polymer Capacitors)

CPU - Support for Socket AM3 processors: AMD PhenomTM II X4 /

X3 / X2 (except 920 / 940) and Athlon II X4 / X3 / X2 processors

- Supports CPU up to 140W

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

- AMD LIVE!TM Ready

- 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 DDR3 Memory T echnology (see CAUTION 2)

- 4 x DDR3 DIMM slots

- Support DDR3 1600(OC)/1333/1066/800 non-ECC, un-buffered memory (see CAUTION 3)

- Max. capacity of system memory: 16GB (see CAUTION 4)

Expansion Slot - 3 x PCI Express 2.0 x16 slots

(green @ x16 mode, blue @ x8 mode, orange @ x4 mode)

- 1 x PCI Express 2.0 x1 slot

- 2 x PCI slots

- Supports ATITM CrossFireXTM, Hybrid CrossFireXTM and 3-Way CrossFireXTM (see CAUTION 5)

Graphics - Integrated AMD Radeon HD 4200 graphics

- D X10.1 class iGPU, Shader Model 4.1

- Max. shared memory 512MB (see CAUTION 6)

- Built-in 128MB DDR3 1333(OC)/1200MHz SidePort Me mory

- Three VGA Output options: D-Sub, D VI-D and HDMI

- Supports HDCP function

- Supports Full HD 1080p Blu-ray (BD) / HD-DVD playback (see CAUTION 7)

Audio - 7.1 CH Windows® VistaTM Premium Level HD Audio

(ALC888 Audio Codec)

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ASRock M3A785GXH/128M Motherboard

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

- Realtek RTL81 11DL

- Supports Wake-On-LAN

Rear Panel I/O I/O Panel

- 1 x PS/2 Keyboard Port

- 1 x VGA/D-Sub Port

- 1 x VGA/DVI-D Port

- 1 x HDMI Port

- 1 x Optical SPDIF Out Port

- 1 x IEEE 1394 Port

- 1 x eSATAII 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: Side Speaker/Rear Speaker/Central/Bass/ Line in/Front Speaker/Microphone (see CAUTION 8)

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 9)

- 1 x eSATAII 3.0Gb/s connector (shared with 1 SATAII connector) (see CAUTION 10)

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

- 1 x Floppy connector

- 1 x IR header

- 1 x COM port header

- 1 x IEEE 1394 header

- 1 x HDMI_SPDIF header

- CPU/Chassis/NB/Power FAN connector

- 24 pin ATX power connector

- 8 pin 12V power connector

- SLI/XFIRE power connector

- CD in header

- Front panel audio connector

- 3 x USB 2.0 headers (support 6 USB 2.0 ports) (see CAUTION 11)

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

- CPU, DRAM, NB Voltage Multi-a djustment

- Supports Smart BIOS

ASRock M3A785GXH/128M Motherboard

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

OverDriveTM Utility, AMD Live! Explorer, AMD Fusion

Unique Feature - ASRock OC T uner (see CAUTION 12)

- Intelligent Energy Saver (see CAUTION 13)

- Instant Boot

- ASRock Instant Flash (see CAUTION 14)

- Hybrid Booster:

- CPU Frequency Stepless Control (see CAUTION 15)

- ASRock U-COP (see CAUTION 16)

- Boot Failure Guard (B.F.G.) Hardware - CPU Temperature Sensing Monitor - Chassis Temperature Sensing

- CPU/Chassis/NB/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 compliant

Certifications - FCC, CE, Microsoft® WHQL Certificated

- EuP Ready (EuP ready power supply is required) (see CAUTION 17)

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

WARNING

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 40 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 15 for proper installation.

3. Whether 1600MHz memory speed is supported depends on the AM3 CPU you adopt. If you want to adopt DDR3 1600 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

ASRock M3A785GXH/128M Motherboard

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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. If you want to use CrossFireXTM or 3-Way CrossFireXTM function, please follow the instructions on page 22 and 23 to reverse the direction of ASRock SLI/XFire Switch Card in advance.

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

7. 1080p Blu-ray (BD) / HD-DVD playback support on this motherboard requires the proper hardware configuration. Please refer to page 11 and 12 for the minimum hardware requirement and the passed 1080p Blu-ray (BD) / HD-DVD films in our lab test.

8. For microphone input, this motherboard supports both stereo and mono modes. For audio output, this motherboard supports 2-channel, 4-channel, 6-channel, and 8-channel mode s. Please check the table on page 3 for proper connection.

9. Before installing SATAII hard disk to SATAII connector, please read the “SATAII Hard Disk Setup Guide” on page 42 of “User Manual” in the support CD to adjust your SATAII hard disk drive to SATAII mode. You can also connect SATA hard disk to SATAII connector directly.

10. This motherboard supports eSATAII interface, the external SATAII specification. Please read “eSATAII Interface Introduction” on page 37 for details about eSATAII and eSATAII installation procedures.

11. Power Management for USB 2.0 works fine under Microsoft® Windows VistaTM 64-bit / VistaTM / XP 64-bit / XP SP1 or SP2.

12. 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

13. 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

ASRock M3A785GXH/128M Motherboard

14. 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.

15. 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.

16. 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 in stall the PC system.

17. EuP, stands for Energy Using Product, was 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 and 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.

ASRock M3A785GXH/128M Motherboard

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TMTM

1.31.3

1.3

1.31.3

1.41.4

1.4

1.41.4

wo CrossFwo CrossF

wo CrossF

wo CrossFwo CrossF

(for Windows® XP / XP 64-bit / VistaTM / VistaTM 64-bit)

Chipset Model Name Chipset Name Driver Vendor ATI

* The PCI Express VGA card with * mark is supported under Windows VistaTM 64-bit only. * For the latest updates of the supported PCI Express VGA card list for CrossFireXTM Mode, please visit our website for details. ASRock website: http://www.asrock.com/support/index.htm

Three CrossFireXThree CrossFireX

Three CrossFireX

Three CrossFireXThree CrossFireX

(for Windows® VistaTM / VistaTM 64-bit)

Chipset Model Name Chipset Name Driver Vendor ATI

* For the latest updates of the supported PCI Express VGA card list for 3-Way CrossFireXTM Mode, please visit our website for details. ASRock website: http://www.asrock.com/support/index.htm

MSI RX2600PRO-T2D256EZ Radeon HD 2600PRO Catalyst 8.9 Gigabyte G V -RX26T256HP-B Radeon HD 2600XT Catalyst 8.9 Powercolor AX3650 512MMD3-XP RADEON 3650 Catalyst 8.9 Gigabyte GV-RX385256H-B RADEON 3850 Catalyst 8.9 Powercolor AX3870 512MD4-H RADEON 3870 Catalyst 8.9 Powercolor AX3870X2 1GBD3-H * RADEON 3870 Catalyst 8.9 Gecube GC-HD485PG3-E3 RADEON 4850 Catalyst 8.9 Powercolor AX4870 512MD5-H RADEON 4870 Catalyst 8.9

Gecube GC-HD485PG3-E3 RADEON 4850 Catalyst 8.12

Powercolor AX4870 512MD5-H RADEON 4870 Catalyst 8.12

TMTM

ireXireX

Graphics Card Suppor Graphics Card Suppor

ireX

Graphics Card Suppor

ireXireX

Graphics Card Suppor Graphics Card Suppor

TMTM

Graphics Card Support List Graphics Card Support List

Graphics Card Support List

Graphics Card Support List Graphics Card Support List

t Listt List

t List

t Listt List

VistaTM /

+ Hotfix

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ASRock M3A785GXH/128M Motherboard

00PRO Catalyst 8.9 00XT Catalyst 8.9

Catalyst 8.9 Catalyst 8.9 Catalyst 8.9 Catalyst 8.9 Catalyst 8.9 Catalyst 8.9

+ Hotfix

1.51.5

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

1.5

Minimum Hardware Requirement for 1080p Blu-ray

1.51.5

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 AM3 all series CPU VGA Onboard VGA with DVI-D port Memory Single Channel DDR3 1066, 1GB x 1 Suggested OS Windows® VistaTM or Windows® VistaTM 64

* 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

-D-D

VD Playback SupporVD Playback Suppor

-D

VD Playback Suppor

-D-D

VD Playback SupporVD Playback Suppor

+ Hotfix

ASRock M3A785GXH/128M Motherboard

1111

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1.61.6

1.6

1.61.6

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 AM3 all series CPU VG A Onboard V GA with DVI-D port Memory Single Channel DDR3 1066, 1GB x 1 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 M3A785GXH/128M Motherboard

2.2.

InstallationInstallation

Installation

2.2.

InstallationInstallation

This is an ATX form factor (12.0-in x 8.8-in, 30.5 cm x 22.4 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.

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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

Socker Corner Small Triangle

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

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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. 3). For proper installation, please kindly refer to the instruction manuals of the CPU fan and the heatsink.

ASRock M3A785GXH/128M Motherboard

2.3 Installation of Memor2.3 Installation of Memor

2.3 Installation of Memor

2.3 Installation of Memor2.3 Installation of Memor

This motherboard provides four 240-pin DDR3 (Double Data Rate 3) DIMM slots, and supports Dual Channel Memory Technology. For dual channel configuration, you always need to install identical (the same brand, speed, size and chip-type) DDR3 DIMM pair in the slots of the same color. In other words, you have to install identical DDR3 DIMM pair in Dual Channel A (DDR3_A1 and DDR3_B1; Blue slots; see p.2 No.7) or identical DD R3 DIMM pair in Dual Channel B (DDR3_A2 and DD R3_B2; White slots; see p.2 No.8), so that Dual Cha nnel Me mory Technology can be a ctivated. This motherboard also allows you to install f our DDR3 DIMMs for dual channel configuration, and please in stall identical DD R3 DIMM s in all four slots. Y ou may refer to the Dual Channel Memory Configuration Table below.

Dual Channel Memory Configurations

DDR3_A1 DDR3_B1 DDR3_A2 DDR3_B2

(Blue Slot) (Blue Slot) (White Slot) (White Slot) (1) Populated Populated - (2) - - Populated Populated (3)* Populated Populated Populated Populated

y Modules (DIMM)y Modules (DIMM)

y Modules (DIMM)

y Modules (DIMM)y Modules (DIMM)

* For the configuration (3), please install identical DD R3 DIMM s in all f our slots.

1. If you want to install two memory modules, for optimal compatibility and reliability, it is recommended to install them in the slots of the same color. In other words, install them either in the set of blue slots (DDR3_A1 and DDR3_B1), or in the set of white slots (DDR3_A2 and DDR3_B2).

2. If only one memory module or three memory modules are installed in the DDR3 DIMM slots on this motherboard, it is unable to activate the Dual Channel Memory Technology.

3. If a pair of memory modules is NOT installed in the same Dual Channel, for example, installing a pair of memory modules in DDR3_A1 and DDR3_A2, it is unable to activate the Dual Channel Memory Technology .

4. It is not allowed to install a DDR or DDR2 memory module into DDR3 slot; otherwise, this motherboard and DIMM may be damaged.

5. If you adopt DDR3 1600 memory modules on this motherboard, it is recommended to install them on DDR3_A2 and DDR3_B2 slots.

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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.

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

sna p back in place a nd the DIMM is properly seated.

ASRock M3A785GXH/128M Motherboard

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 4 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 Express cards with x1 lane

width cards, such as Gigabit LAN card a nd SAT A2 card. PCIE2 (PCIE x16 slot; Green) is used f or PCI Express x16 lane width graphics cards, or used to in stall PCI Expre ss graphics cards to support CrossFireXTM function. PCIE3 (PCIE x16 slot; Blue) is used to install PCI Express graphics cards to support CrossFireXTM function. PCIE4 (PCIE x16 slot; Orange) is used for PCI Express x1 lane width cards, such as Gigabit LAN card, SAT A2 card, etc., or used to in stall PCI Express graphics cards to support 3-Way CrossFireXTM function.

PCIE1 slot (x1 mode)

PCIE2 slot (x16 or x8 mode)

PCIE3 slot (x8 mode)

1. If you plan to install only one PCI Express VGA card on this motherboard, please install it on PCIE2 slot (Green). In this mode, you do not need to adjust the default setting of ASRock SLI/XFire Switch Card, and please do not remove or lose ASRock SLI/XFire Switch Card when it is still in working condition.

ASRock M3A785GXH/128M Motherboard

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2. In CrossFireXTM mode, please reverse the direction of ASRock SLI/XFire Switch Card, and install PCI Express x16 graphics cards on PCIE2 and PCIE3 slots. Therefore, both these two slots will work at x8 bandwidth.

3. In 3-Way CrossFireXTM mode, please reverse the direction of ASRock SLI/XFire Switch Card, and install PCI Express x16 graphics cards on PCIE2, PCIE3 and PCIE4 slots. Therefore, PCIE2 and PCIE3 slots will work at x8 bandwidth while PCIE4 slot will work at x4 bandwidth.

PCIE2 / PCIE3 / SLI/XFire Switch Card Retention Slot Configurations

PCIE2 Slot PCIE3 Slot SLI/XFire Switch Card (Green) (Blue) Retention Slot

Single Gra phics Card PCIE x16 N/A

(Default)

Dual Graphics Cards PCIE x8 PCIE x8 in CrossFireXTM Mode

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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 re a d 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 system unit cover (if your motherboard is already installed in a

chassis).

Step 3. Remove the bracket fa cing the slot that you intend to use. Keep the screws

for later use.

Step 4. Align the card connector with the slot and press firmly until the card is

completely seated on the slot. Step 5. Fasten the card to the chassis with screws. Step 6. Replace the system cover.

ASRock M3A785GXH/128M Motherboard

2.5 Dual Monitor and Surround Display Features2.5 Dual Monitor and Surround Display Features

2.5 Dual Monitor and Surround Display Features

2.5 Dual Monitor and Surround Display Features2.5 Dual Monitor and Surround Display Features

Dual Monitor Feature

This motherboard supports dual monitor feature. With the internal VGA output support (DVI-D, D-Sub and HDMI), you ca n easily enjoy the benefits of dual monitor feature without installing any add-on VGA card to this motherboard. This motherboard also provides independent display controllers for DVI-D, D-Sub a nd HDMI to support dual VGA output so that D VI-D, D-sub and HDMI ca n drive same or different display contents. T o ena ble dual monitor feature, ple a se f ollow the below ste ps:

1. Connect DVI-D monitor cable to VGA/DVI-D port on the I/O panel, connect D-Sub monitor cable to VGA/D-Sub port on the I/O panel, and connect HDMI monitor cable to HDMI port on the I/O panel.

VGA/D-Sub port

VGA/D VI-D port

2. If you have installed onboard V GA driver from our support CD to your system already, you can freely enjoy the benefits of dual monitor function after your system boots. If you haven’t installed onboard VGA driver yet, please install onboard V GA driver from our support CD to your system a nd restart your computer. Then you can start to use dual monitor function on this motherboard.

1. DVI-D and HDMI ports cannot function at the same time. When one of them is enabled, the other one will be disabled.

2. When you playback HDCP-protected video from Blu-ray (BD) or HD-DVD disc, the content will be displayed only in one of the two monitors instead of both monitors.

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HDMI port

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Surround Display Feature

This motherboard supports surround display upgrade. With the internal VGA output support (DVI-D, D-Sub and HDMI) a nd external a dd-on PCI Express V GA cards, you can easily enjoy the benefits of surround display feature. Plea se refer to the following ste ps to set up a surround display environment:

1. Refer to page 22 and 23 to reverse the direction of ASRock SLI/XFire Switch Card.

2. Install the ATITM PCI Express V GA cards on PCIE2, PCIE3 and PCIE4 slots. Please refer to page 17 for proper expansion card in stallation procedures f or details.

3. Connect DVI-D monitor cable to VGA/DVI-D port on the I/O panel, connect D-Sub monitor cable to VGA/D-Sub port on the I/O panel, and connect HDMI monitor cable to HDMI port on the I/O panel. Then connect other monitor ca ble s to the corresponding connectors of the add-on PCI Express VGA cards on PCIE2, PCIE3 and PCIE4 slots.

4. Boot your system. Press <F2> to enter BIOS setup. Enter “Share Memory” option to adjust the memory ca pability to [32MB], [64MB], [128MB] [256MB] or [512MB] to enable the function of VGA/D-sub. Please make sure that the value you select is less than the total capability of the system memory. If you do not adjust the BIOS setup, the default value of “Share Memory”, [Auto], will disable V GA/D-Sub function when the a dd-on VGA card is inserted to this motherboard.

5. Install the onboard V GA driver and the add-on PCI Express VGA card driver to your system. If you have installed the drivers already, there is no need to install them again.

6. Set up a multi-monitor display.

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For Windows® XP / XP 64-bit OS:

Right click the desktop, choose “Properties”, a nd sele ct the “Settings” ta b so that you can adjust the parameters of the multi-monitor according to the steps below. A. Click the “Identify” button to display a large number on each monitor. B. Right-click the display icon in the Display Properties dialog that you wish to be your primary monitor, and then select “Primary”. When you use multiple monitors with your card, one monitor will always be Primary, and all additional monitors will be de sign ated as Secondary. C. Select the display icon identified by the number 2. D. Click “Extend my Windows desktop onto this monitor”. E. Right-click the display icon and select “Attached”, if necessary. F . Set the “Screen Re solution” a nd “Color Quality” as appropri ate f or the second monitor. Click “Apply” or “OK” to apply these new values. G. Repeat steps C through E for the diaplay icon identified by the number one, two, three, four, five, six, seven and eight.

ASRock M3A785GXH/128M Motherboard

For Windows® VistaTM / VistaTM 64-bit OS:

Right click the desktop, choose “Personalize”, a nd sele ct the “Display Settings” tab so that you can adjust the parameters of the multi-monitor according to the steps below. A. Click the number ”2” icon. B. Click the items “This is my main monitor” and “Extend the desktop onto this monitor”. C. Click “OK” to save your change. D. Repeat steps A through C for the display icon identified by the number three, four, f ive, six, seven and eight.

6. Use Surround Display. Click and drag the display icons to positions re presenting the physical setup of your monitors that you would like to use. The placement of display icons determines how you move items from one monitor to another.

HDCP Function

HDCP function is supported on this motherboard. To use HDCP function with this motherboard, you need to adopt the monitor that supports HDCP function as well. Theref ore, you ca n enjoy the superior display quality with high-definition HDCP encryption contents. Plea se refer to below instruction for more details about HDCP function.

What is HDCP?

HDCP stands f or High-Ba ndwidth Digital Content Protection, a specification developed by Intel® for protecting digital entertainment content that uses the DVI interface. HDCP is a copy protection scheme to eliminate the possibility of intercepting digital data midstream between the video source, or transmitter - such as a computer, DVD player or set-top box - and the digital display, or receiver - such as a monitor, television or projector. In other words, HDCP specification is designed to protect the integrity of content as it is being transmitted.

Products compatible with the HDCP scheme such a s DVD players, satellite and cable HDTV set-top-boxe s, as well as few entertainment PCs requires a secure connection to a complia nt display. Due to the increase in manufacturers employing HDCP in the ir equipment, it is highly recommended that the HDTV or LCD monitor you purchase is compatible.

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2.6 CrossF2.6 CrossF

2.6 CrossF

2.6 CrossF2.6 CrossF

This motherboard supports CrossFireXTM and 3-Way CrossFireXTM feature. CrossFireX and 3-Way CrossFireXTM technology offer the most adva ntageous means available of combining multiple high performa nce Graphics Processing Units (GPU) in a single PC. Combining a range of different operating modes with intelligent software design and an innovative interconnect mechanism, CrossFireXTM and 3-W ay CrossFireXTM enable the highest possible level of performa nce and i mage quality in a ny 3D application. Currently CrossFireXTM feature is supported with Windows® XP with Service Pack 2 and Vista OS, and 3-Way CrossFireXTM feature is supported with Windows® VistaTM OS. Please check AMD website f or ATITM CrossFireXTM and 3-W ay CrossFireXTM driver updates.

1. If a customer incorrectly configures their system they will not see the performance benefits of CrossFireXTM. All three CrossFireXTM components, a CrossFireXTM Ready graphics card, a CrossFireXTM Ready motherboard and a CrossFireXTM Edition co-processor graphics card, must be installed correctly to benefit from the CrossFireXTM multi-GPU platform.

2. If you pair a 12-pipe CrossFireTM Edition card with a 16-pipe card, both cards will operate as 12-pipe cards while in CrossFireXTM mode.

2.6.1 Graphics Card Setup2.6.1 Graphics Card Setup

2.6.1 Graphics Card Setup

2.6.1 Graphics Card Setup2.6.1 Graphics Card Setup

2.6.1.1 Installing T2.6.1.1 Installing T

2.6.1.1 Installing T

2.6.1.1 Installing T2.6.1.1 Installing T Cards Cards

Cards

Cards Cards

Different CrossFireXTM cards may require different methods to enable CrossFireX feature. In below procedures, we use Radeon HD 3870 as the example graphics card. For other CrossFireXTM cards that ATITM has released or will release in the future, please refer to ATITM graphics card manuals for detailed installation guide.

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ireXireX

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Operation Guide Operation Guide

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Operation Guide

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Operation Guide Operation Guide

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-R-R

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Step 1. There is one ASRock SLI/XFire Switch Card fa ctory-mounted on this

motherboard. This card served a s a switch between the default mode (x16) and CrossFireXTM mode (x8 / x8). ASRock SLI/XFire Switch Card is factorymounted with its default mode (x16) side toward the retention slot base.

ASRock M3A785GXH/128M Motherboard

Step 2. To change it to CrossFireXTM mode, you need to reverse the direction of ASRock

SLI/XFire Switch Card. Please simultaneously pull open both the retention arms that hold the card in position. The card itself will spring away from the retention slot. Take it out gently by holding its edges, and keep away from touching the connectors (Golden Fingers).

Step 3. Reverse the card direction so a s to have the “X8 / X8 MODE” wording side

toward the retention slot base. In sert the card into the bottom of the base.

Step 4. Push the card down into the retention slot till both the retention arms firmly

hold the card into position. Also, keep away from touching the connectors (Golden Fingers).

Step 5. Install one Radeon graphics card to PCIE2 slot. For the proper installation

procedures, plea se refer to section “Expansion Slots”.

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Step 6. Install one Radeon graphics card to PCIE3 slot. For the proper installation

procedures, plea se refer to section “Expansion Slots”.

Step 7. Connect two Radeon graphics cards by installing CrossFireTM Bridge on

CrossFireTM Bridge Interconnects on the top of Radeon gra phics cards. If there are two gold fingers on each Ra deon gra phics card, plea se use two CrossFire Bridge to connect two Radeon gra phics cards. (CrossFireTM Bridge is provided with the graphics card you purcha se, not bundled with this motherboard. Plea se refer to your graphics card vendor f or details.)

CrossFireTM Bridge

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Step 8. Connect the DVI monitor cable to the DVI connector on the Radeon graphics

card on PCIE2 slot. (Y ou may use the D VI to D-Sub ada pter to convert the DVI connector to D-Sub interfa ce, a nd then connect the D-Sub monitor cable to the DVI to D-Sub ada pter .)

Step 9. Connect a 4-pin ATX power cable to SLI/XFIRE power connector .

ASRock M3A785GXH/128M Motherboard

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2.6.1.2 Installing Three CrossFireX2.6.1.2 Installing Three CrossFireX

2.6.1.2 Installing Three CrossFireX

2.6.1.2 Installing Three CrossFireX2.6.1.2 Installing Three CrossFireX Cards Cards

Cards

Cards Cards

Step 1. Follow step 1 to 4 on page 22 and 23 to reverse the direction of ASRock

SLI/XFire Switch Card.

Step 2. Install one Radeon graphics card to PCIE2 slot. For the proper installation

procedures, plea se refer to section “Expansion Slots”.

Step 3. Install one Radeon graphics card to PCIE3 slot. For the proper installation

procedures, plea se refer to section “Expansion Slots”.

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-Ready Graphics-Ready Graphics

-Ready Graphics

-Ready Graphics-Ready Graphics

Step 4. Install one Radeon graphics card to PCIE4 slot. For the proper installation

procedures, plea se refer to section “Expansion Slots”.

Step 5. Use one CrossFireTM Bridge to connect Radeon gra phics cards on PCIE2 a nd

PCIE3 slots, and use the other CrossFireTM Bridge to connect Radeon gra phics cards on PCIE3 and PCIE4 slots. (CrossFireTM Bridge is provided with the graphics card you purchase, not bundled with this motherboard. Plea se refer to your graphics card vendor f or details.)

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CrossFireTM Bridge

Step 6. Connect the DVI monitor cable to the DVI connector on the Radeon graphics

card on PCIE2 slot. (Y ou may use the D VI to D-Sub ada pter to convert the DVI connector to D-Sub interfa ce, a nd then connect the D-Sub monitor cable to the DVI to D-Sub ada pter .)

Step 7. Connect a 4-pin ATX power cable to SLI/XFIRE power connector .

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2.6.2 Driver Installation and Setup2.6.2 Driver Installation and Setup

2.6.2 Driver Installation and Setup

2.6.2 Driver Installation and Setup2.6.2 Driver Installation and Setup

Step 1. Power on your computer and boot into OS. Step 2. Remove the ATITM driver if you have any VGA driver in stalled in your system.

The Catalyst Uninstaller is an optional download. We recommend using this utility to uninstall any previously installed Catalyst drivers prior to installation. Please check AMD website for ATITM driver updates.

Step 3. Install the required drivers to your system.

For Windows® XP OS:

A. ATITM recommends Windows® XP Service Pack 2 or higher to be installed (If you have Windows® XP Service Pack 2 or higher installed

in your system, there is no need to download it again): http://www.microsoft.com/windowsxp/sp2/default.mspx B. You must have Microsoft .NET Fra mework installed prior to downloading and installing the CAT ALYST Control Center . Please check Microsoft website for details.

For Windows® VistaTM OS:

Install the CA TALYST Control Center. Plea se check AMD website f or details.

Step 4. Restart your computer. Step 5. Install the VGA card drivers to your system, and restart your computer.

Then you will find “A TI Catalyst Control Center” on your Windows® taskbar.

ATI Catalyst Control Center

Step 6. Double-click “ATI Catalyst Control Center”. Click “V iew”, select “CrossFireXTM”,

and then check the item “Enable CrossFireXTM”. Select “2 GPUs” and click

“Apply” (if you install two Radeon gra phics cards). Sele ct “3 GPUs” and click

“OK” (if you install three Radeon gra phics cards).

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Although you have selected the option “Enable CrossFireTM”, the CrossFireX function may not work actually. Your computer will automatically reboot. After restarting your computer, please confirm whether the option “Enable CrossFireTM” in “ATI Catalyst Control Center” is selected or not; if not, please select it again, and then you are able to enjoy the benefit of CrossFireX feature.

Step 7. You can freely enjoy the benefit of CrossFireXTM or 3-Way CrossFireXTM feature.

* CrossFireXTM appearing here is a registered trademark of ATITM Technologies Inc., and is used only for identification or explanation and to the owners’ benefit, without intent to infringe. * For further information of ATITM CrossFireXTM technology, please check AMD website for updates and details.

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2.72.7

Hybrid CrossFireXHybrid CrossFireX

2.7

Hybrid CrossFireX

2.72.7

Hybrid CrossFireXHybrid CrossFireX

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Operation Guide Operation Guide

Operation Guide

Operation Guide Operation Guide

This motherboard supports ATITM Hybrid CrossFireXTM feature. A TITM Hybrid CrossFireXTM brings multi-GPU performance capabilities by enabling an AMD 785G integrated graphics processor and a discrete graphics processor to operate simultaneously with combined output to a single display for blisteringly-fast frame rates. Currently, ATITM Hybrid CrossFireXTM Technology is only supported with Windows® Vista

OS, and is not available with Windows® XP OS. In the future, ATITM Hybrid CrossFireXTM may be supported with Windows® XP OS. Please visit our website for updated information.

What does an ATITM Hybrid CrossFireXTM system include?

An ATITM Hybrid CrossFireXTM system includes an ATITM RadeonTM 2400 or ATI RadeonTM 3450 series graphics processor and a motherboard based on an AMD 785G integrated chipset, all operating in a Windows® VistaTM environment. Please refer to below PCI Express graphics card support list for ATITM Hybrid CrossFireXTM. For the future update of more compatible PCI Express graphics cards, please visit our website for further information.

Vendor Chipset Model Driver

ATI RADEON X2400PRO MSI RX2400 PRO-TD256EH Catalyst 8.9

RADEON HD2400XT * POWERCOLOR HD2400 XT Catalyst 8.9

256MB DDR3

RADEON HD3450 POWERCOLOR AX3450 Catalyst 8.9

256MD2-S

* Please visit our website for the future driver update and the latest information.

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Enjoy the benefit of Hybrid CrossFireXEnjoy the benefit of Hybrid CrossFireX

Enjoy the benefit of Hybrid CrossFireX

Enjoy the benefit of Hybrid CrossFireXEnjoy the benefit of Hybrid CrossFireX

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Step 1. Keep ASRock SLI/XFire Switch Card at the default mode (x16). Step 2. Install one compatible PCI Express graphics card to PCIE2 slot (green). For

the proper installation procedures, plea se refer to section “Expansion Slots”.

Step 3. Connect the monitor cable to the correspondent connector on the PCI

Express graphics card on PCIE2 slot.

Step 4. Boot your system. Press <F2> to enter BIOS setup. Enter “Advanced” screen,

and enter “Chipset Settings”. Then set the option “Surround View” to [Enabled].

Step 5. Boot into OS. Plea se remove the ATITM driver if you have any VGA driver

installed in your system.

Step 6. Install the onboard VGA driver from our support CD to your system f or both the

onboard V GA and the discrete graphics card.

Step 7. Restart your computer. Then you will find “ATI Catalyst Control Center” on

your Windows® taskbar.

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ATI Catalyst Control Center

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Step 8. Double-click “A TI Catalyst Control Center”. Click “V iew”, click “CrossFireTM”,

and then select the option “Ena ble CrossFireTM”.

View

CrossFire

Step 9. Click “Yes” to continue.

Step 10. Click “OK” to save your change.

Enable CrossFire

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Step 11. Reboot your system. Then you can freely enjoy the benefit of Hybrid

CrossFireXTM feature.

* Hybrid CrossFireXTM appearing here is a registered trademark of ATITM Technologies Inc., and is used only for identification or explanation and to the owners’ benefit, without intent to infringe. * For further information of ATITM Hybrid CrossFireXTM technology, please check AMD website for up dates and details.

ASRock M3A785GXH/128M Motherboard

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