Intel G31 Series User Manual
User’s Manual
Socket LGA775 Processor Mainboard
G31 Series
Rev: 1.0, May 2010
Motherboard
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meanings, and we won't commit users' misunderstanding of the typesetting error.
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All product names are only for identication purpose, and they are belong to the manufacturer
or brand owner(s).
Table of Contents
Chapter 1 Introduction .............................................................................................
3
1.1 Package Checklist ..................................................................................................
3
1.2 Specications ........................................................................................................
4
1.3 Mainboard Layout .................................................................................................5
1.4 Connecting Rear Panel I/O Devices .........................................................................6
Chapter 2 Hardware Setup .......................................................................................7
2.1 Choosing a Computer Chassis ................................................................................7
2.2 Installing the Mainboard ........................................................................................7
2.3 Installation of the CPU and CPU Cooler .................................................................8
2.3.1 Installation of the CPU .....................................................................................8
2.3.2 Installation of the CPU Cooler............................................................................9
2.4 Installation of Memory Modules ..............................................................................9
2.5 Connecting Peripheral Devices ..............................................................................10
2.5.1 IDE Disk Drive Connectors ..........................................................................10
2.5.2 Serial ATA Connectors ...................................................................................
10
2.5.3 PCI and PCI Express slots ..............................................................................
10
Chapter 3 Jumpers & Headers Setup .....................................................................
11
3.1 Checking Jumper Settings ....................................................................................
11
3.2 CMOS Memory Clearing Header ............................................................................
11
3.3 Keyboard Power Function ....................................................................................
11
3.4 FAN Power Connectors .........................................................................................
12
3.5 Front Panel Switches & Indicators Headers ..........................................................12
3.6 Additional USB Port Headers .................................................................................
13
3.7 Front Panel Audio ................................................................................................
13
3.8 S/PDIF Output Connection Header .......................................................................
14
3.9 ATX Power Input Connectors ................................................................................
15
Chapter 4 BIOS Setup Utility ..................................................................................
16
4.1 About BIOS Setup ...............................................................................................
16
4.2 To Run BIOS Setup ..............................................................................................
16
4.3 About CMOS .......................................................................................................16
4.4 The POST (Power On Self Test) .............................................................................
16
4.5 BIOS Setup — CMOS Setup Utility .......................................................................17
4.5.1 CMOS Setup Utility ........................................................................................17
4.5.2 Control Keys .................................................................................................18
4.5.3 Main menu ...................................................................................................18
4.5.4 Advanced setting ..........................................................................................20
4.5.5 Boot setting ..................................................................................................26
4.5.6 Security setting .............................................................................................28
4.5.7 Power setting ................................................................................................29
4.5.8 JUSTw00t! setting .........................................................................................
32
4.5.9 Exit Options ..................................................................................................
34
Chapter 5 Driver Installation ..................................................................................
37
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G31 Series User's Manual
Chapter 1 Introduction
1.1 Package Checklist
Thank you for choosing our product.
Please check with the following list of accessories, if there is any broken or missing part,
please contact your dealer or the local distributor.
• IDE Cable X 1
• Rear I/O Panel X 1
• User's Manual X 1
• Driver/Utility CD X 1
• Serial ATA Power Cable X 1
• Serial ATA Signal Cable X 1
The items listed above are for reference only, and are subject to change without notice.
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G31 Series User's Manual
1.2 Specications
CPU
- LGA775 socket for Intel® Core™2 Quad/ Core™ 2 Duo/ Pentium
®
Dual Core/ Pentium® D/ Pentium® 4 (800MHz FSB)/ Celeron®
(Conroe-L) Processors
- FSB 1333MHZ/1066MHz/800MHz
- Hyper Threading Technology
Main Chipset
- Based on G31 + ICH7
- ICH7: Intel FW82801GB
Graphics - Intel Graphics Media Accelerator 3100
Main Memory
- 2 x 240-pin DIMM slots support
- Maximum memory capacity up to 4GB
- Supports Dual Channel DDRII 1066/800MHz
BIOS
- Supports Plug&Play
- Supports BIOS ROM Write Protect
- Supports Advanced Power Management ACPI,STR (S3 Function)
- Supports 1x SYS FAN, 1x CPU FAN
- CPU temperature, Fan speed, System Voltage monitoring
Rear Panel I/O
- 1 x PS/2 Mouse port
- 1 x PS/2 Keyboard port
- 1 x COM port
- 1 x VGA port
- 1 x RJ45 port
- 4 x USB 2.0 ports, USB 1.1 is compliant
- 3 x Audio port
Integrated Ports
- 1 x 24-pin ATX main power connector
- 1 x 4-pin/8-pin ATX 12V power connector
- 1 x SPDIF Out header (Optional)
- 2 x USB 2.0 headers for additional 4 USB 2.0 ports (by cables)
- 1 x IR port (optional)
- 1 x LPT port
- 4 x SATA ports
- 1 x IDE connector, 2 x IDE devices could be connected,
Supports ATA 66/100
Sound
- Onboard 6-channel HD Audio Codec
- Front Panel Jumper, provides stereo MIC port on front panel
Onboard LAN - Onboard 10/100/1000Mbps compatible LAN (Optional)
Expansion Slots
- 1 x PCI Express x16 slot
- 2 x PCI slots
- Support PCI Bus interface v2.2 compliant
Form Factor - Micro ATX (185*243.8 mm)
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G31 Series User's Manual
1.3 Mainboard Layout
(This picture is only for reference)
JG31C02 V1.1
185*243. 8MM
LPT
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G31 Series User's Manual
1.4 Connecting Rear Panel I/O Devices
The rear I/O of the mainboard provides the following I/O ports:
(This picture is only for reference)
• PS/2 Mouse: Connects to a PS/2 mouse.
• PS/2 Keyboard: Connects to a PS/2 keyboard.
• COM: Connects to a serial device.
• VGA: Connects to a monitor's VGA input.
• USB: The USB ports are used to connect USB 2.0/1.1 devices such as scanner, speakers,
keyboard, mouse, hub, digital camera, joystick, etc.
• LAN: The LAN port allows the motherboard to connect to a local area network by means of
a network hub.
• AUDIO(Rear Panel Audio):
Line-in (Light Blue): This jack is used to connect to the line out from any external audio
sources such as MP3 player, CD player, AM/FM radio tuner, etc.
ine-out (Front Left/Right Jack, Lime): This jack is used to connect to the front left and
right channel speakers of the audio system.
Mic-in (Pink): This jack is used to connect an external microphone.
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G31 Series User's Manual
Chapter 2 Hardware Setup
2.1 Choosing a Computer Chassis
• Choose a chassis big enough to install this mainboard.
• As some features for this mainboard are implemented by cabling connectors on the
mainboard to indicators and switches or buttons on the chassis, make sure your chassis
supports all the features required.
• If there is possibility of adopting some more hard drives, make sure your chassis has
sufcient power and space for them.
• Most chassis have alternatives for I/O shield located at the rear panel. Make sure the I/O
shield of the chassis matches the I/O port conguration of this mainboard. You can nd
an I/O shield specically designed for this mainboard in its package.
2.2 Installing the Mainboard
Most computer chassis have a base with many mounting holes to allow the mainboard to
be securely attached, and at the same time, prevent the system from short circuits. There
are two ways to attach the mainboard to the
chassis base: (1) with studs, or (2) with spacers.
Basically, the best way to attach the board is with
studs. Only if you are unable to do this should you
attach the board with spacers. Line up the holes on
the board with the mounting holes on the chassis.
If the holes line up and there are screw holes, you
can attach the board with studs. If the holes line
up and there are only slots, you can only attach with
spacers. Take the tip of the spacers and insert them
into the slots. After doing this to all the slots, you can slide the board into position aligned
with slots. After the board has been positioned, check to make sure everything is OK before
putting the chassis back on.
To install this mainboard:
1. Locate all the screw holes on the mainboard and the chassis base.
2. Place all the studs or spacers needed on the chassis base and have them tightened.
3. Face the mainboard’s I/O ports toward the chassis’s rear panel.
4. Line up all the mainboard’s screw holes with those studs or spacers on the chassis.
5. Install the mainboard with screws and have them tightened.
The mainboard and its component layouts illustrated in this chapter were
based mainly on model “G31”, unless speci cally stated.
Always power off the computer and unplug the AC power cord before adding or removing
any peripheral or component. Failing to do so may cause severe damage to your
mainboard and/or peripherals. Plug in the AC power cord only after you have carefully
checked everything.
To prevent shorting the PCB circuit, please REMOVE the metal studs or spacers if they are
already fastened on the chassis base and are without mounting-holes on the mainboard to
align with.
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G31 Series User's Manual
2.3 Installation of the CPU and CPU Cooler
Before installing the CPU, please comply with the following conditions:
1. Please make sure that the mainboard supports the CPU.
2. Please take note of the one indented corner of the CPU. If you install the CPU in the wrong
direction, the CPU will not insert properly. If this occurs, please change the insert direction
of the CPU.
3. Please add an even layer of heat sink paste between the CPU and CPU cooler.
4. Please make sure the CPU cooler is installed on the CPU prior to system use, otherwise
overheating and permanent damage of the CPU may occur.
5. Please set the CPU host frequency in accordance with the processor specications. It is not
recommended that the system bus frequency be set beyond hardware specications since
it does not meet the required standards for the peripherals. If you wish to set the frequen-
cy beyond the proper specications, please do so according to your hardware
specications including the CPU, graphics card, memory, hard drive, etc.
2.3.1 Installation of the CPU
1. Open the socket lever by
pushing the lever down and
away from the socket (see
Figure 1, 1 and 2).
2. Lift the load plate. Do not
touch the socket contacts
(see Figure 2, 3 and 4)
3 . Re m o v e th e plas t i c
prot ectiv e socke t cove r
from the load plate (see
Figure 3, 5). Do not discard
the protective socket cover.
Always replace the socket
cover if the processor is
removed from the socket.
4. Remove the processor
f r o m t h e p r o t e c t i v e
processor cover. Hold the
processor only at the edges,
being careful not to touch
the bottom of the processor
(see Figure 4 ) . D o not
d i s c a r d the p r o t e c t i v e
pro ces sor c ove r. Always
r e p l a c e the pro c e s s o r
back to the package if the
processor is removed from
the socket.
5. Hold the processor with
yo u r thumb a nd i n d e x
ngers oriented as shown in
Figure 5. Make sure ngers
align to the socket cutouts
(se e F igure 5 , 6 ). Alig n
notches (see Figure 5, 7)
with the socket see (Figure
5, 8). Lower the processor
straight down without tilting
or sliding the processor in
the socket.
6. Pressing down on the
loa d p lat e ( Figure 6 , 9 )
c l o s e a n d e n g a g e the
socket lever (Figure 6, 10).
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G31 Series User's Manual
2.3.2 Installation of the CPU Cooler
For proper installation, please kindly refer to the instruction manuals of your CPU Cooler.
2.4 Installation of Memory Modules
This mainboard provides two 240-pin DDRII (Double Data Rate) DIMM slots, and supports
Dual Channel Memory Technology. For dual channel conguration, you always need to install
two identical (the same brand, speed, size and chip-type) memory modules in the DDRII
DIMM slots to activate Dual Channel Memory Technology. Otherwise, it will operate at single
channel mode.
To reach the performance of Dual Channel DDR3, the following rules must be obeyed:
For 2-DIMM dual-channel installation:
Populate DIMM modules of the same type and size on slots [DIMM1]+[DIMM2]
To install system memory:
1. Power off the computer and unplug the
AC power cord before installing or
removing memory modules.
2. Locate the DIMM slot on the board.
3. Hold two edges of the DIMM module
carefully, keep away from touching its
connectors.
4. Align the notch key on the module with
the rib on the slot.
5. Firmly press the module into the slots until the ejector tabs at both sides of the slot
automatically snap into the mounting notch. Do not force the DIMM module in with extra
force as the DIMM module only ts in one direction.
6. To remove the DIMM modules, push the two ejector tabs on the slot outward
simultaneously, and then pull out the DIMM module.
Static electricity can damage the electronic components of the computer or optional
boards. Before starting these procedures, ensure that you are discharged of static
electricity by touching a grounded metal object briey.
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G31 Series User's Manual
JG31C02V1.1
185*243.8MM
LPT
JG31C02V1.1
185*243.8MM
LPT
2.5 Connecting Peripheral Devices
2.5.1 IDE Disk Drive Connectors
2.5.2 Serial ATA Connectors
The Serial ATA (SATA) connectors are used to connect Serial ATA drives. Connect one end
of the Serial ATA cable to a Serial ATA connector and the other end to your Serial ATA device.
2.5.3 PCI and PCI Express slots
Install PCI Express X16 graphics card into slot “PCIE1”.
Install PCI card into slots “PCI1” or“PCI2”.
Each of the IDE port connects up to two IDE
drives at Ultra ATA 100/66/33 mode by one
40-pin, 80-conductor,and 3-connector Ultra
ATA/66 ribbon cables.
Connect the single end (blue connector) at the
longer length of ribbon cable to the IDE port of
this board, the other two ends (gray and black
connector) at the shorter length of the ribbon
cable to the connectors of your hard drives.
Make sure to congure the “Master” and “Slave” relation
before connecting two drives by one single ribbon cable.
The red line on the ribbon cable must be aligned with
pin-1 on both the IDE port and the hard-drive connector.
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G31 Series User's Manual
JG31C02V1.1
185*243.8MM
LPT
Chapter 3 Jumpers & Headers Setup
3.1 Checking Jumper Settings
• For a 2-pin jumper, plug the jumper cap on both
pins will make it CLOSE (SHORT). Remove the
jumper cap, or plug it on either pin (reserved for
future use) will leave it at OPEN position.
• For 3-pin jumper, pin 1~2 or pin 2~3 can be
shorted by plugging the jumper cap in.
How to identify the PIN1 jumpers?
Please check the mainboard carefully, the PIN1 is always
marked with a character "1" or a thick white line.
3.2 CMOS Memory Clearing Header
The time to clear the CMOS memory occurs when (a)
the CMOS data becomes corrupted, (b) you forgot
the supervisor or user password preset in the BIOS
menu, (c) you are unable to boot-up the system
because the CPU ratio/clock was incorrectly set in the
BIOS menu, or (d) whenever there is modication on
the CPU or memory modules.
This header uses a jumper cap to clear the CMOS
memory and have it recongured to the default
values stored in BIOS.
• Pins 1 and 2 shorted
(Default): Normal
operation.
• Pins 2 and 3 shorted:
Clear CMOS memory.
To clear the CMOS memory and load in the default values:
1. Power-off the system then unplug the power cord.
2. Set pin 2 and pin 3 shorted by the jumper cap. Wait for a few seconds. Set the jumper
cap back to its default settings --- pin 1 and pin 2 shorted.
3. Plug the power cord then power-on the system.
4. For incorrect CPU ratio/clock settings in the BIOS, press <Del> key to enter the BIOS
setup menu right after powering on system.
5. Set the CPU operating speed back to its default or an appropriate value.
6. Save and exit the BIOS setup menu.
3.3 Keyboard Power Function
Pin 1-2 short: Disabled power on by keyboard.
Pin 2-3 short: Support power on by keyboard. JKB:
Disable (Default)
Enable
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