ASROCK G31DE User manual

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Copyright Notice:Copyright Notice:
Copyright Notice:Copyright Notice:
Copyright Notice:
No part of this installation guide may be reproduced, transcribed, transmitted, or trans-
lated in any language, in any form or by any means, except duplication of documen-
tation 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 identifica-
tion 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.
Published February 2009
Copyright©2009ASRock INC.All rights reserved.
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

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Motherboard LayoutMotherboard Layout
Motherboard LayoutMotherboard Layout
Motherboard Layout
1 PS2_USB_PWR1 Jumper 17 Chassis Fan Connector (CHA_FAN1)
2 ATX 12V Connector (ATX12V1) 18 USB 2.0 Header (USB6_7, Blue)
3 775-Pin CPU Socket 19 USB 2.0 Header (USB4_5, Blue)
4 North Bridge Controller 20 Infrared Module Header (IR1)
5 2 x 240-pin DDR2 DIMM Slots 21 Print Port Header (LPT1, Purple)
(Dual Channel: DDRII_1, DDRII_2; Yellow) 22 Floppy Connector (FLOPPY1)
6 ATX Power Connector (ATXPWR1) 23 Front Panel Audio Header
7 IDE1 Connector (IDE1, Blue) (HD_AUDIO1, Lime)
8 Clear CMOS Jumper (CLRCMOS1) 24 HDMI_SPDIF Header
9 South Bridge Controller (HDMI_SPDIF1, Yellow)
10 Third SATAII Connector (SATAII_3; Orange) 25 Internal Audio Connector: CD1 (Black)
11 Fourth SATAII Connector (SATAII_4; Orange) 26 PCI Slots (PCI1- 3)
12 Secondary SATAII Connector (SATAII_2; Red) 27 PCI Express x1 Slot (PCIE3)
13 Primary SATAII Connector (SATAII_1; Red) 28 PCI Express x16 Slot (PCIE2)
14 Chassis Speaker Header (SPEAKER 1, 29 PCI Express x1 Slot (PCIE1)
Purple) 30 Power Fan Connector (PWR_FAN1)
15 System Panel Header (PANEL1, Orange) 31 CPU Fan Connector (CPU_FAN1)
16 BIOS SPI Chip

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I/O PI/O P
I/O PI/O P
I/O Panelanel
anelanel
anel
1 PS/2 Mouse Port (Green) 6 Microphone (Pink)
2 USB 2.0 Ports (USB23) 7 USB 2.0 Ports (USB01)
* 3 LAN RJ-45 Port 8 VGA Port
4 Line In (Light Blue) 9 COM Port
5 Line Out (Lime) 10 PS/2 Keyboard Port (Purple)
* 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 HDAPrimary 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.
LAN Port
ACT/LINK
LED SPEED
LED
* There are two LED next to the LAN port. Please refer to the table below for the LAN port LED
indications.
LAN Port LED Indications
Activity/Link LED SPEEDLED
Status Description Status Description
Off No Activity Off 10Mbps connection
Blinking Data Activity Orange 100Mbps connection
Green 1Gbps connection

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1. Introduction1. Introduction
1. Introduction1. Introduction
1. Introduction
Thank you for purchasing ASRock G31DE motherboard, a reliable motherboard pro-
duced underASRock’s consistently stringent quality control. It delivers excellent perfor-
mance with robust design conformingtoASRock’scommitment toqualityand endurance.
This Quick InstallationGuide contains introduction of the motherboard and step-by-step
installation guide. More detailed information of the motherboard can be found in the user
manual presented in 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
1.1 P1.1 P
1.1 P1.1 P
1.1 Packack
ackack
ackage Contentsage Contents
age Contentsage Contents
age Contents
ASRock G31DE Motherboard
(ATX Form Factor: 12.0-in x 7.5-in, 30.5 cm x 19.1 cm)
ASRock G31DE Quick InstallationGuide
ASRock G31DE Support CD
One 80-conductor UltraATA66/100 IDE Ribbon Cable
One SerialATA (SATA)Data Cable (Optional)
One SerialATA (SATA) HDDPower Cable (Optional)
One I/O Panel Shield

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1.21.2
1.21.2
1.2 SpecificationsSpecifications
SpecificationsSpecifications
Specifications
Platform -ATX Form Factor: 12.0-in x 7.5-in, 30.5 cm x 19.1 cm
CPU - LGA 775 for Intel®CoreTM 2 Extreme / CoreTM 2 Quad / CoreTM
2 Duo / Pentium®Dual Core / Celeron®Dual Core / Celeron®,
supporting Penryn Quad Core Yorkfield andDual Core
Wolfdale processors
- Compatible with all FSB1600/1333/1066/800MHz CPUs
(see CAUTION 1)
- Supports Hyper-ThreadingTechnology (see CAUTION 2)
- Supports Untied Overclocking Technology (see CAUTION 3)
- Supports EM64T CPU
Chipset -Northbridge: Intel®G31
- Southbridge: Intel®ICH7
Memory -Dual Channel DDR2 Memory Technology (see CAUTION 4)
- 2 xDDR2 DIMM slots
- SupportsDDR2 1066/800/667 non-ECC, un-buffered memory
(see CAUTION 5)
- Max. capacity of system memory: 8GB (see CAUTION 6)
Expansion Slot - 1 x PCI Express x16 slot
- 2 x PCI Express x1 slots
- 3 x PCI slots
Graphics - Intel®Graphics MediaAccelerator 3100
- Pixel Shader 2.0,DirectX 9.0
- Max. shared memory 384MB (see CAUTION 7)
Audio - 5.1 CH Windows® VistaTM Premium Level HDAudio
(RealtekALC662Audio Codec)
LAN - PCIE x1 Gigabit LAN10/100/1000 Mb/s
-Realtek RTL8111DL
- Supports Wake-On-LAN
Rear Panel I/O I/O Panel
- 1 x PS/2 Mouse Port
- 1 x PS/2 Keyboard Port
- 1 x Serial Port: COM1
- 1 x VGAPort
- 4 x Ready-to-Use USB 2.0 Ports
- 1 x RJ-45 LANPort with LED(ACT/LINK LEDand SPEED LED)
- HDAudio Jack: Line in / Front Speaker / Microphone

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Connector - 4 x SATAII 3.0Gb/s connectors (No Support for RAIDand
“Hot Plug” functions) (see CAUTION 8)
- 1 xATA100 IDE connector (supports 2 x IDE devices)
- 1 x Floppy connector
- 1 x IR header
- 1 x Print port header
- 1 x HDMI_SPDIF header
- CPU/Chassis/Power FANconnector
- 24 pinATX power connector
- 8 pin 12V power connector
- CD in header
- Front panel audio connector
- 2 x USB 2.0 headers (support 4 USB 2.0 ports)
(see CAUTION 9)
BIOS Feature - 4MbAMI BIOS
-AMI Legal BIOS
- Supports “Plug and Play”
-ACPI 1.1 Compliance Wake Up Events
- Supports jumperfree
- SMBIOS 2.3.1 Support
- CPU, VCCMVoltage Multi-adjustment
- Supports Smart BIOS
Support CD -Drivers, Utilities,AntiVirus Software (Trial Version)
Unique Feature - ASRock OC Tuner (see CAUTION 10)
- Intelligent Energy Saver (see CAUTION 11)
- Instant Boot
- Hybrid Booster:
- CPU Frequency Stepless Control (see CAUTION 12)
-ASRock U-COP (see CAUTION 13)
- Boot FailureGuard (B.F.G.)
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® 2000 / XP / XP 64-bit / VistaTM /
VistaTM 64-bit compliant
Certifications - FCC, CE, WHQL
* For detailed product information, please visit our website: http://www.asrock.com

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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. FSB1600-CPU will operate in overclocking mode. Under this situation,
PCIE frequency will also be overclocked to 120MHz.
2. About the setting of “Hyper Threading Technology”, please check page
32 of “User Manual” in the support CD.
3. This motherboard supports Untied Overclocking Technology. Please read
“Untied Overclocking Technology” on page 19 for details.
4. 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 12 for proper
installation.
5. Please check the table below for the CPU FSB frequency and its
corresponding memory support frequency.
CPU FSB Frequency Memory Support Frequency
1600 DDR2 800, DDR2 1066 *
1333 DDR2 667, DDR2 800, DDR2 1066 *
1066 DDR2 667, DDR2 800, DDR2 1066
800 DDR2 667, DDR2 800
* When you use a FSB1600-CPU on this motherboard, it will run at
DDR2 960 if you adopt a DDR2 1066 memory module. When you use
a FSB1333-CPU on this motherboard, it will run at DDR2 1000 if you
adopt a DDR2 1066 memory module.
* DDR2 1066 memory module will operate in overclocking mode.
6. 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®VistaTM
64-bit with 64-bit CPU, there is no such limitation.
7. The maximum shared memory size is defined by the chipset vendor
and is subject to change. Please check Intel®website for the latest
information.
8. Before installing SATAII hard disk to SATAII connector, please read the “SATAII
Hard Disk Setup Guide” on page 25 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.
9. Power Management for USB 2.0 works fine under Microsoft®Windows®
VistaTM 64-bit / VistaTM / XP 64-bit / XP SP1 or SP2 / 2000 SP4.

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10. 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
11. Featuring an advanced proprietary hardware and software design,
Intelligent Energy Saver is a revolutionary technology that delivers
unparalleled power savings. In other words, it is able to provide excep-
tional power saving and improve power efficiency without sacrificing
computing performance. Please visit our website for the operation pro-
cedures of Intelligent Energy Saver.
ASRock website: http://www.asrock.com
12. Although this motherboard offers stepless control, it is not recom-
mended to perform over-clocking. Frequencies other than the recom-
mended CPU bus frequencies may cause the instability of the system
or damage the CPU.
13. 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 and the heatsink when you install the PC
system.

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2.2.
2.2.
2.InstallationInstallation
InstallationInstallation
Installation
Pre-installation PrecautionsPre-installation Precautions
Pre-installation PrecautionsPre-installation Precautions
Pre-installation Precautions
Take note of the following precautions before you install mother-
board components or change any motherboard settings.
1. Unplug the power cord from the wall socket before touching any
component. Failure to do so may cause severe damage to the
motherboard, peripherals, and/or components.
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
antstatic 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.
2.12.1
2.12.1
2.1 CPU InstallationCPU Installation
CPU InstallationCPU Installation
CPU Installation
For the installation of Intel 775-LAND CPU,
please follow the steps below.
Before you insert the 775-LAND CPU into the socket, please check if
the CPU surface is unclean or if there is any bent pin on the socket.
Do not force to insert the CPU into the socket if above situation is
found. Otherwise, the CPU will be seriously damaged.
775-Pin Socket Overview
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Step 1. Open the socket:
Step 1-1. Disengaging the lever by depressing
down and out on the hook to clear
retention tab.
Step 1-2. Rotate the load lever to fully open po-
sition at approximately 135 degrees.
Step 1-3. Rotate the load plate to fully open po-
sition at approximately 100 degrees.
Step 2. Insert the 775-LAND CPU:
Step 2-1. Hold the CPU by the edges where are
marked with black lines.
Step 2-2. Orient the CPU with IHS (Integrated
Heat Sink) up. Locate Pin1 and the two
orientation key notches.
For proper inserting, please ensure to match the two orientation key
notches of the CPU with the two alignment keys of the socket.
Step 2-3. Carefully place the CPU into the socket
by using a purely vertical motion.
Step 2-4. Verify that the CPU is within the socket
and properly mated to the orient keys.
Step 3. Remove PnP Cap (Pick and Place Cap):
Use your left hand index finger and thumb to
support the load plate edge, engage PnP cap
with right hand thumb and peel the cap from the
socket while pressing on center of PnP cap to
assist in removal.
black line
black line
775-PinSocket
Pin1
alignment key alignment key
Pin1
orientation
key notch orientation
key notch
775-LAND CPU

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1. It is recommended to use the cap tab to handle and avoid kicking
off the PnP cap.
2. This cap must be placed if returning the motherboard for after
service.
Step 4. Close the socket:
Step 4-1. Rotate the load plate onto the IHS.
Step 4-2. While pressing down lightly on load
plate, engage the load lever.
Step 4-3. Secure load lever with load plate tab
under retention tab of load lever.
2.22.2
2.22.2
2.2 Installation of CPU Fan and HeatsinkInstallation of CPU Fan and Heatsink
Installation of CPU Fan and HeatsinkInstallation of CPU Fan and Heatsink
Installation of CPU Fan and Heatsink
For proper installation, please kindly refer to the instruction manuals of your CPU fan
and heatsink.
Below is an example to illustrate the installation of the heatsink for 775-LANDCPU.
Step 1. Apply thermal interface material onto center
of IHS on the socket surface.
Step 2. Place the heatsink onto the socket. Ensure
fan cables are oriented on side closest to the
CPU fan connector on the motherboard
(CPU_FAN1, see page 2,No. 31).
Step 3. Align fasteners with the motherboard
throughholes.
Step 4. Rotate the fastener clockwise, then press
down on fastener caps with thumb to install
and lock. Repeat with remaining fasteners.
If you press down the fasteners without rotating them clockwise,
the heatsink cannot be secured on the motherboard.
Step 5. Connect fan header with the CPU fan
connector on the motherboard.
Step 6. Secure excess cable with tie-wrap to ensure
cable does not interfere with fan operation or
contact other components.
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2.3 Installation of Memor2.3 Installation of Memor
2.3 Installation of Memor2.3 Installation of Memor
2.3 Installation of Memory Modules (DIMM)y Modules (DIMM)
y Modules (DIMM)y Modules (DIMM)
y Modules (DIMM)
G31DE motherboard provides two 240-pinDDR2 (DoubleData Rate 2)DIMM slots, and
supportsDual Channel Memory Technology. For dual channel configuration, you always
needto installtwoidentical (thesame brand,speed,size andchip-type)memorymodules
in theDDR2DIMM 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 DIMMInstalling a DIMM
Installing 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 aDIMM on the slot such that the notch on theDIMM matches the break
on the slot.
The DIMM only fits in one correct orientation. It will cause permanent
damage to the motherboard and theDIMM if you force theDIMM into the
slot at incorrect orientation.
Step 3. Firmly insert the DIMM into the slot until the retaining clips at both ends fully
snap 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 3 PCI slots and 3 PCI Express slots on this motherboard.
PCIslots: PCI slots are used to install expansion cards that have the 32-bit PCI
interface.
PCIEslots: PCIE1 / PCIE3 (PCIE x1 slot) is used for PCI Express cards with x1 lane
width cards, such asGigabit LAN card, SATA2 card, etc.
PCIE2 (PCIE x16 slot) is used for PCI Express cards with x16 lane
width graphics cards.
If you install the add-on PCI Express VGA card to PCIE2 (PCIE x16 slot),
the onboard VGA will be disabled. If you install the add-on PCI Express
VGA card to PCIE2 (PCIE x16 slot) and adjust the “Internal Graphics
Mode Select” BIOS option to [Enabled], the onboard VGA will be enabled,
and the primary screen will be onboard VGA.
Installing an expansion cardInstalling an expansion card
Installing an expansion cardInstalling an expansion card
Installing 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. Please read the documentation
of the expansion card and make 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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2.5 Jumpers Setup2.5 Jumpers Setup
2.5 Jumpers Setup2.5 Jumpers Setup
2.5 Jumpers Setup
The illustration shows how jumpers are
setup. When the jumper cap is placed on
pins, the jumper is “Short”. If no jumper cap
is placed on pins, the jumper is “Open”. The
illustration shows a 3-pin jumper whose pin1
and pin2 are “Short” when jumper cap is
placed on these 2 pins.
Jumper Setting Description
PS2_USB_PWR1 Short pin2, pin3 to enable
(see p.2 No. 1) +5VSB (standby) for PS/2
or USB wake up events.
Note: To select +5VSB, it requires 2 Amp and higher standby current provided by
power supply.
ClearCMOS
(CLRCMOS1, 2-pin jumper)
(see p.2 No. 8)
Note: CLRCMOS1 allows you to clear the data in CMOS. The data in CMOS includes
system setup information such as system password, date, time, and system
setup parameters. To clear and reset the system parameters to default setup,
please turn off the computer and unplug the power cord from the power
supply. After waiting for 15 seconds, use a jumper cap to short 2 pins on
CLRCMOS1 for 5 seconds.
2-pin jumper
Short Open

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2.6 Onboard Headers and Connectors2.6 Onboard Headers and Connectors
2.6 Onboard Headers and Connectors2.6 Onboard Headers and Connectors
2.6 Onboard Headers and Connectors
Onboard headers and connectors are NOT jumpers. Do NOT place
jumper caps over these headers and connectors. Placing jumper caps
over the headers and connectors will cause permanent damage of the
motherboard!
FDD connector
(33-pinFLOPPY1)
(see p.2 No. 22)
Note: Make sure the red-striped side of the cable is plugged into Pin1 side of the
connector.
Primary IDE connector (Blue)
(39-pin IDE1, see p.2 No. 7)
Note: Please refer to the instruction of your IDE device vendor for the details.
Serial ATAII Connectors These Serial ATAII (SATAII)
(SATAII_1: see p.2, No. 13) connectors support SATAII
(SATAII_2: see p.2, No. 12) or SATAhard disk for internal
(SATAII_3: see p.2, No. 10) storage devices. The current
(SATAII_4: see p.2, No. 11) SATAII interface allows up to
3.0Gb/s data transfer rate.
Serial ATA (SATA) Either end of the SATAdata cable
Data Cable can be connected to the SATA /
(Optional) SATAII hard disk or the SATAII
connector on the motherboard.
Serial ATA (SATA) Please connect the black end of
Power Cable SATA power cable to the power
(Optional) connector on each drive. Then
connect the white end of SATA
power cable to the power
connector of the power supply.
connect the black end
to the IDE devices
connect the blue end
to the motherboard 80-conductor ATA 66/100 cable
thered-striped sideto Pin1
connect tothe
powersupply
connect tothe SATA
HDDpowerconnector
SATAII_4
SATAII_3
SATAII_2
SATAII_1
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1. High Definition Audio supports Jack Sensing, but the panel wire on
the chassis must support HDA to function correctly. Please follow the
instruction in our manual and chassis manual to install your system.
2. If you use AC’97 audio panel, please install it to the front panel audio
header as below:
A. Connect Mic_IN(MIC) to MIC2_L.
B. Connect Audio_R (RIN) to OUT2_R andAudio_L (LIN) to OUT2_L.
C. Connect Ground (GND) to Ground (GND).
USB 2.0 Headers Besides four default USB 2.0
(9-pin USB6_7) ports on the I/O panel, there are
(see p.2 No. 18) two USB 2.0 headers on this
motherboard. Each USB 2.0
header can support two USB
2.0 ports.
(9-pin USB4_5)
(see p.2 No. 19)
InternalAudio Connector This connector allows you
(4-pin CD1) to receive stereo audio input
(CD1: see p.2 No. 25) from sound sources such as
a CD-ROM, DVD-ROM, TV
tuner card, or MPEG card.
Print Port Header This is an interface for print
(25-pin LPT1) port cable that allows
(see p.2 No. 21) convenient connection of printer
devices.
InfraredModuleHeader This header supports an
(5-pin IR1) optional wireless transmitting
(see p.2 No. 20) and receivinginfraredmodule.
Front PanelAudio Header This is an interface for front
(9-pin HD_AUDIO1) panel audio cable that allows
(see p.2 No. 23) convenientconnectionand
control of audio devices.
CD1

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System Panel Header This header accommodates
(9-pin PANEL1) several system front panel
(see p.2 No. 15) functions.
Chassis Speaker Header Please connect the chassis
(4-pin SPEAKER 1) speaker to this header.
(see p.2 No. 14)
D. MIC_RET and OUT_RET are for HD audio panel only. You don’t
need to connect them for AC’97 audio panel.
E. Enter BIOS Setup Utility. Enter Advanced Settings, and then select
Chipset Configuration. Set the Front Panel Control option from
[Auto] to [Enabled].
F. Enter Windows system. Click the icon on the lower right hand
taskbar to enter Realtek HDAudio Manager.
For Windows®2000 / XP / XP 64-bit OS:
Click “Audio I/O”, select “Connector Settings” , choose
“Disable front panel jack detection”, and save the change by
clicking “OK”.
For Windows®VistaTM / VistaTM 64-bit OS:
Click the right-top “Folder” icon , choose “Disable front
panel jack detection”, and save the change by clicking “OK”.
G. To activate the front mic.
For Windows®2000 / XP / XP 64-bit OS:
Please select “Front Mic” as default record device.
If you want to hear your voice through front mic, please deselect "Mute"
icon in “Front Mic” of “Playback” portion.
For Windows®VistaTM / VistaTM 64-bit OS:
Go to the "Front Mic" Tab in the Realtek Control panel.
Click "Set Default Device" to make the Front Mic as the default record
device.
Chassis and Power Fan Connectors Pleaseconnectthefan cables
(3-pin CHA_FAN1) to the fan connectors and
(see p.2 No. 17) match the black wire to the
groundpin.
(3-pin PWR_FAN1)
(see p.2 No. 30)

1818
1818
18 ASRock G31DE Motherboard
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20-Pin ATX Power Supply Installation
Though this motherboard provides 4-Pin CPU fan (Quiet Fan) support, the 3-Pin
CPU fan still can work successfully even without the fan speed control function.
If you plan to connect the 3-Pin CPU fan to the CPU fan connector on this
motherboard, please connect it to Pin 1-3.
3-Pin Fan Installation
Pin 1-3 Connected
ATXPower Connector Please connect anATX power
(24-pin ATXPWR1) supply to this connector.
(see p.2 No. 6)
Though this motherboard provides 24-pin ATX power connector,
it can still work if you adopt a traditional 20-pin ATX power supply.
To use the 20-pin ATX power supply, please plug your power
supply along with Pin 1 and Pin 13.
12
1
24
13
12
1
24
13
HDMI_SPDIFHeader HDMI_SPDIFheader,providing
(3-pin HDMI_SPDIF1) SPDIFaudio output to HDMI VGA
(see p.2 No. 24) card, allows the system to
connect HDMI Digital TV/
projector/LCDdevices. Please
connect the HDMI_SPDIF
connector of HDMI VGAcard to
this header.
CPU Fan Connector Please connect a CPU fan cable
(4-pin CPU_FAN1) to this connector and match
(see p.2 No. 31) the black wire to the ground pin.
1
2
3
4
ATX 12VPower Connector Please connect anATX 12V
(8-pin ATX12V1) power supply to this connector.
(see p.2 No. 2)
4-Pin ATX 12V Power Supply Installation
Though this motherboard provides 8-pin ATX 12V power
connector, it can still work if you adopt a traditional 4-pin ATX
12V power supply. To use the 4-pin ATX power supply, please
plug your power supply along with Pin 1 and Pin 5.
5 1
8 4
5 1
8 4

1919
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ASRock G31DE Motherboard
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n
ation
d
12
1
24
13
CB
A
HDMI_SPDIFCable Please connect the black end (A)
(Optional) of HDMI_SPDIF cable to the
HDMI_SPDIFheader on the
motherboard. Then connect the
white end (B or C) of
HDMI_SPDIF cable to the
HDMI_SPDIFconnector of HDMI
VGAcard.
A. black end B. white end (2-pin) C. white end (3-pin)
tion
e
5 1
8 4
2.72.7
2.72.7
2.7 Driver Installation GuideDriver Installation Guide
Driver Installation GuideDriver Installation Guide
Driver Installation Guide
To install the drivers to your system, please insert the support CD to your optical drive
first. Then, the drivers compatible to your system can be auto-detected and listed on
the support CDdriver page. Please follow the order from up to bottom side to install
those required drivers. Therefore, the drivers you install can work properly.
2.82.8
2.82.8
2.8 Untied Overclocking TUntied Overclocking T
Untied Overclocking TUntied Overclocking T
Untied Overclocking Technologyechnology
echnologyechnology
echnology
This motherboard supports Untied Overclocking Technology, which means during
overclocking, FSB enjoys better margin due to fixed PCI / PCIE buses. Before you
enableUntiedOverclockingfunction,pleaseenter“OverclockMode”option of BIOS setup
to set the selection from [Auto] to [CPU, PCIE,Async.]. Therefore, CPU FSB is untied
during overclocking, but PCI / PCIE buses are in the fixed mode so that FSB can operate
under a more stable overclocking environment.
Please refer to the warning on page 7 for the possible overclocking risk
before you apply Untied Overclocking Technology.

2020
2020
20 ASRock G31DE Motherboard
3. BIOS Information3. BIOS Information
3. BIOS Information3. BIOS Information
3. BIOS Information
The Flash Memory on the motherboard stores BIOS Setup Utility. When you start up
the computer, please press <F2> during the Power-On-Self-Test (POST) to enter
BIOS Setup utility; otherwise, POST continues with its test routines. If you wish to
enter BIOS Setup after POST, please restart the system by pressing <Ctl> + <Alt> +
<Delete>, or pressing the reset button on the system chassis. The BIOS Setup pro-
gram is designed to be user-friendly. It is a menu-driven program, which allows you to
scroll through its various sub-menus and to select among the predetermined choices.
For the detailed information about BIOS Setup, please refer to the User Manual (PDF
file) contained in the Support CD.
4. Sof4. Sof
4. Sof4. Sof
4. Software Supportware Suppor
tware Supportware Suppor
tware Support CD informationt CD information
t CD informationt CD information
t CD information
This motherboard supports various Microsoft®Windows®operating systems: 2000 /
XP / XP 64-bit /VistaTM / VistaTM 64-bit. The Support CDthat came with the motherboard
contains necessary drivers and useful utilities that will enhance motherboard features.
To begin using the Support CD, insert the CD into your CD-ROM drive. It will display
the Main Menu automatically if “AUTORUN” is enabled in your computer. If the Main
Menu does not appear automatically, locate and double-click on the file “ASSETUP.
EXE” from the BIN folder in the Support CD to display the menus.
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