GA-G1975X
Intel® Pentium® Processor Extreme Edition
Intel® Pentium® D / Pentium® 4 LGA775 Processor Motherboard
User's Manual
Rev. 1005
12ME-G1975X-1005R
* The WEEE marking on the product indicates this product must not be disposed of with user's other household waste
and must be handed over to a designated collection point for the recycling of waste electrical and electronic equipment!!
* The WEEE marking applies only in European Union's member states.
Motherboard
GA-G1975X
Dec. 16, 2005
Motherboard
GA-G1975X
Dec. 16, 2005
Copyright
© 2005 GIGA-BYTE TECHNOLOGY CO., LTD. All rights reserved.
The trademarks mentioned in the manual are legally registered to their respective companies.
Notice
The written content provided with this product is the property of Gigabyte.
No part of this manual may be reproduced, copied, translated, or transmitted in any form or by any
means without Gigabyte's prior written permission. Specifications and features are subject to
change without prior notice.
Product Manual Classification
In order to assist in the use of this product, Gigabyte has categorized the user manual in the
following:
For quick installation, please refer to the "Hardware Installation Guide" included with the
product.
For detailed product information and specifications, please carefully read the
"Product User Manual".
For detailed information related to Gigabyte's unique features, please go to "Technology
Guide" section on Gigabyte's website to read or download the information you need.
For more product details, please click onto Gigabyte's website at www.gigabyte.com.tw
Table of Contents
Item Checklist ................................................................................................................. 6
GA-G1975X Motherboard Layout .................................................................................. 7
Block Diagram ................................................................................................................ 8
Chapter 1 Hardware Installation ..................................................................................... 9
1-1 Considerations Prior to Installation .................................................................... 9
1-2 Feature Summary .......................................................................................... 10
1-3 Installation of the CPU and Heatsink .............................................................. 13
1-3-1 Installation of the CPU ......................................................................................... 13
1-3-2 Installation of the Heatsink .................................................................................. 14
1-4 Installation of Memory .................................................................................... 15
1-5 Installation of Expansion Cards ...................................................................... 17
1-6 Configuring a Multi-Graphics Cards System .................................................. 18
1-6-1 Configuring a Multi View System ...................................................................... 18
1-6-2 Configuring an ATi CrossFireTM System ........................................................ 19
1-7 I/O Back Panel Introduction ........................................................................... 20
1-8 Connectors Introduction .................................................................................. 21
Chapter 2 BIOS Setup ................................................................................................ 35
The Main Menu (For example: BIOS Ver. : F1) ....................................................... 36
2-1 Standard CMOS Features ............................................................................. 38
2-2 Advanced BIOS Features.............................................................................. 41
2-3 Integrated Peripherals ..................................................................................... 44
2-4 Power Management Setup ............................................................................. 46
2-5 PnP/PCI Configurations................................................................................. 47
2-6 PC Health Status ........................................................................................... 48
2-7 MB Intelligent Tweaker(M.I.T.) ....................................................................... 50
2-8 Top Performance ............................................................................................. 54
2-9 Select Language ............................................................................................. 54
2-10 Load Fail-Safe Defaults ................................................................................... 55
2-11 Load Optimized Defaults ................................................................................. 55
2-12 Set Supervisor/User Password ..................................................................... 56
2-13 Save & Exit Setup ......................................................................................... 56
2-14 Exit Without Saving ....................................................................................... 57
- 4 -
Chapter 3 Drivers Installation ...................................................................................... 59
3-1 Install Chipset Drivers .................................................................................... 59
3-2 Software Applications ..................................................................................... 60
3-3 Driver CD Information .................................................................................... 60
3-4 Hardware Information ..................................................................................... 61
3-5 Contact Us ..................................................................................................... 61
Chapter 4 Appendix ................................................................................................... 63
4-1 Unique Software Utilities ................................................................................ 63
4-1-1 EasyTune 5 Introduction ..................................................................................... 64
4-1-2 Xpress Recovery2 Introduction ......................................................................... 65
4-1-3 Flash BIOS Method Introduction ........................................................................ 67
4-1-4 Configuring SATA Hard Drive(s) (Controller: Intel ICH7R) ............................ 79
4-1-5 2- / 4- / 5.1- / 6.1- / 7.1- Channel Audio Function Introduction .................... 90
4-1-6 DTS Introduction ................................................................................................... 96
4-2 Troubleshooting ............................................................................................. 103
4-3 POST Error Code ........................................................................................ 104
- 5 -
Item Checklist
IDE Cable x 2 & FDD Cable x 1
Serial ATAII Cable x 4
Serial ATA Power Cable x 2
SATA + Serial ATA Power Cable x 1
2 Ports USB 2.0 Cable x 2
8-Channel Audio Combo kit x 1
2 Ports USB 2.0 + 2 Ports 1394 Cable x 1
I/O Shield
DGBR2 Card bracket
External Serial ATA Card
DGBR2 Card
* The items listed above are for reference only, and are subject to change without notice.
- 6 -
GA-G1975X Motherboard Layout
ATX_12V_2X4
KB_MS
AUDIO
USB
Broadcom
5789
SUR_CEN
SPDIF_IO
COMA
LAN
F_AUDIO
PCIE_4_1
CD_IN
PCIE1
PCIE2
PCIE_16_1
PCIE_16_2
PCIE_4_2
PW1
LGA775
PW2
PCIE_12V
CREATIVE
CA0106
F1_1394
Intel® 975X
F2_1394
CPU_FAN
TSB43AB23
GA-G1975X
F_USB1
F_USB2
IDE2
DDRII2
DDRII1
Intel® ICH7R
BAT
PWR_FAN
PWR_FAN
DDRII4
DDRII3
MAIN
BIOS
BACKUP
BIOS
IT8211F
S_ATAII0_1
GREEN_USB
IT8712F
ATX
FDD
IDE1
CI
SYS_FAN
S_ATAII2_3
F_PANEL
PWR_LED
Debug LED
(Note)
RF_ID
(Note) For error code information, please refer to page 104.
- 7 -
Block Diagram
2 PCI-ECLK
2 PCI Express x 4
PCI-ECLK
(100MHz)
x4/x1 x4/x1
PCI Express Bus
TSB43AB23 IT8211F
2 PCI
(100MHz)
PCI Bus
3 IEEE1394a
PCI Express x16
LAN1
RJ45
Broadcom
5789
x1
LGA775
Processor
Intel
975X
CREATIVE
CA0106
MIC
Line-Out
Host
Interface
®
Intel
ICH7R
Line-In
SPDIF In
CPUCLK+/-(266/200 MHz)
DDRII 888
MCHCLK (266/200MHz)
Dual BIOS
®
IT8712
8 USB
Ports
SPDIF Out
(Note 1)
/ 667
(Note 2)
533MHz DIMM
Dual Channel Memory
4 SATA 3Gb/s
ATA33/66/100
IDE Channel
Floppy
COM Port
PS/2 KB/Mouse
24MHz
33MHz
/
Side Speaker Out
PCICLK(33MHz)
Surround Speaker Out
ATA33 / 66 / 100 / 133 IDE Channel
Center/Subwoofer Speaker Out
(Note 1) DDR II memory can be overclocked to 888MHz (must be used with a 1066MHz FSB processor)
through overclocking in BIOS. Go to GIGABYTE's website for more information about the
supported DDR II memory modules for this feature.
(Note 2) To use a DDR II 667 memory module on the motherboard, you must install an 800/1066MHz
FSB processor.
- 8 -
Chapter 1 Hardware Installation
1-1 Considerations Prior to Installation
Preparing Your Computer
The motherboard contains numerous delicate electronic circuits and components which can
become damaged as a result of electrostatic discharge (ESD). Thus, prior to installation, please
follow the instructions below:
1. Please turn off the computer and unplug its power cord.
2. When handling the motherboard, avoid touching any metal leads or connectors.
3. It is best to wear an electrostatic discharge (ESD) cuff when handling electronic components
(CPU, RAM).
4. Prior to installing the electronic components, please have these items on top of an antistatic pad or
within a electrostatic shielding container.
5. Please verify that the power supply is switched off before unplugging the power supply connector
from the motherboard.
Installation Notices
1. Prior to installation, please do not remove the stickers on the motherboard. These stickers are required
for warranty validation.
2. Prior to the installation of the motherboard or any hardware, please first carefully read the information
in the provided manual.
3. Before using the product, please verify that all cables and power connectors are connected.
4. To prevent damage to the motherboard, please do not allow screws to come in contact with the
motherboard circuit or its components.
5. Please make sure there are no leftover screws or metal components placed on the motherboard or
within the computer casing.
6. Please do not place the computer system on an uneven surface.
7. Turning on the computer power during the installation process can lead to damage to system
components as well as physical harm to the user.
8. If you are uncertain about any installation steps or have a problem related to the use of the product,
please consult a certified computer technician.
English
Instances of Non-Warranty
1. Damage due to natural disaster, accident or human cause.
2. Damage as a result of violating the conditions recommended in the user manual.
3. Damage due to improper installation.
4. Damage due to use of uncertified components.
5. Damage due to use exceeding the permitted parameters.
6. Product determined to be an unofficial Gigabyte product.
Hardware Installation- 9 -
English
1-2 Feature Summary
CPU Supports LGA775 Intel® Pentium® Processor Extreme Edition/ Pentium® D /
Pentium® 4
L2 cache varies with CPU
Front Side Bus Supports 1066/800MHz FSB
Chipset Northbridge: Intel® 975X Express Chipset
Southbridge: Intel® ICH7R
LAN Onboard Broadcom 5789 chip (10/100/1000 Mbit)
Audio Onboard CREATIVE CA0106 chip
Supports 2 / 4 / 5.1 / 6.1/ 7.1 channel audio
Supports SPDIF In/Out connection
IEEE 1394 Onboard TI 1394a chip
3 IEEE1394a ports
Storage ICH7R Southbrigde
- 1 FDD connector, allowing connection of 2 FDD devices
- 1 IDE connector (IDE1) with UDMA 33/ATA 66/ATA 100 suppport,
- 4 SATA 3Gb/s connectors (SATAII0_1, SATAII2_3), allowing connection
- Supports data striping (RAID 0), mirroring (RAID 1) or
Onboard IT8211F chipset
- 1 IDE connector (IDE2) (UDMA 33/ATA 66/ATA 100/ATA 133),
- Supports ATAPI mode for HDD
- Supports IDE bus master operation
O.S Support Microsoft Windows 2000/XP
Memory 4 DDR II DIMM memory slots (supports up to 8GB memory)
Supports dual channel DDR II 888
Supports 1.8V DDR II DIMMs
Supports ECC/non-ECC type DRAM
Expanstion Slots 2 PCI Express x 16 slot
2 PCI Express x 4 slots
2 PCI slots
(Note 1)
(Note 2)
allowing connection of 2 IDE devices
of 4 SATA devices
striping + mirroring (RAID 0+1) or RAID 5 for Serial ATA
suppport, allowing connection of 2 IDE devices
(Note 3)
(Note 4)
/667
/533 unbuffered DIMMs
GA-G1975X Motherboard - 10 -
Internal Connectors 1 24-pin ATX power connector
1 8-pin ATX 12V power connector
1 4-pin PCIE 12V power connector
1 floppy connector
2 IDE connectors
4 SATA 3Gb/s connectors
1 CPU fan connector
1 system fan connector
1 power fan connector
1 front panel connector
1 front audio connector
1 CD In connector
1 COMA connector
3 USB 2.0/1.1 connectors for additional 6 ports by cables
2 IEEE1394a connectors for additional 3 ports by cables
1 RF_ID connector
1 SUR_CEN connector
1 SPDIF In/Out connector
1 power LED connector
Rear Panel I/O 1 PS/2 keyboard port
1 PS/2 mouse port
1 RJ 45 port
2 USB 2.0/1.1 ports
3 audio jacks (Line In / Line Out / MIC In)
I/O Control IT8712 chip
Hardware Monitor System voltage detection
CPU temperature detection
CPU / System / Power fan speed detection
CPU warning temperature
CPU / System / Power fan failure warning
CPU smart fan control
BIOS 2 4M bit flash ROM
Use of licensed AWARD BIOS
Supports DualBIOS/Multilanguage BIOS
Additional Features Supports @BIOS
Supports Download Center
Supports Q-Flash
Supports EasyTune
Supports Xpress Install
Supports Xpress Recovery2
Supports Xpress Rescue
Bundle Software Norton Internet Security (OEM revision)
(Note 5)
English
Hardware Installation- 11 -
English
Overclocking Over Voltage via BIOS (CPU/ DDR II/ PCI-E/ FSB)
- CPU Over Voltage : Adjustable CPU voltage at 0.05V
(Adjustable range from 1.7500V to 1.0625V)
- DIMM Over Voltage : Adjustable DIMM voltage at 0.1V
(Adjustable range from +0.1V to +0.7V)
- PCI-E Over Voltage : Adjustable DIMM voltage at 0.1V
(Adjustable range from +0.1V to +0.7V)
- FSB Over Voltage : Adjustable FSB voltage at 0.05V
(Adjustable range from +0.05V to +0.35V)
Over Clock via BIOS (CPU/ DDR II/ PCI-E)
- PCI Express x16 Frequency : Allows 1MHz increment from 90MHz to
150MHz.
- Adjustable FSB/DDRII frequencies.
Form Factor ATX form factor; 30.5cm x 24.4cm
(Note 1) For further CPU support information, please go to GIGABYTE's website.
(Note 2) 4~7.1 channel audio configuration requires the use of Audio Combo Kit.
(Note 3) DDR II memory can be overclocked to 888MHz (must be used with an 1066MHz FSB
processor) through overclocking in BIOS. Go to GIGABYTE's website for more information
about the supported DDR II memory modules for this feature.
(Note 4) To use a DDR II 667 memory module on the motherboard, you must install an 800/1066MHz
FSB processor.
(Note 5) EasyTune functions may vary depending on different motherboards.
GA-G1975X Motherboard - 12 -
1-3 Installation of the CPU and Heatsink
Before installing the CPU, please comply with the following conditions:
1. Please make sure that the motherboard 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 heatsink.
4. Please make sure the heatsink 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 specifications. It is not
recommended that the system bus frequency be set beyond hardware specifications since it
does not meet the required standards for the peripherals. If you wish to set the frequency
beyond the proper specifications, please do so according to your hardware specifications
including the CPU, graphics card, memory, hard drive, etc.
HT functionality requirement content :
Enabling the functionality of Hyper-Threading Technology for your computer system requires all
of the following platform components:
- CPU: An Intel
- Chipset: An Intel® Chipset that supports HT Technology
- BIOS: A BIOS that supports HT Technology and has it enabled
- OS: An operation system that has optimizations for HT Technology
1-3-1 Installation of the CPU
Metal Lever
®
Pentium 4 Processor with HT Technology
Fig. 1
Gently lift the metal
lever located on the
CPU socket to the
upright position.
English
Fig. 2
Remove the plastic
covering on the CPU
socket.
Fig. 3
Notice the small gold
colored triangle located
on the edge of the CPU
socket. Align the
indented corner of the
CPU with the triangle and gently insert the CPU into
position. (Grasping the CPU firmly between your
thumb and forefinger, carefully place it into the socket
in a straight and downwards motion. Avoid twisting or
bending motions that might cause damage to the CPU
during installation.)
Fig. 4
Once the CPU is
properly inserted,
please replace the
load plate and push the
metal lever back into
its original position.
Hardware Installation- 13 -
1-3-2 Installation of the Heatsink
Male Push Pin
English
Fig.1
Please apply an even layer of heatsink paste on
the surface of the installed CPU.
Fig. 3
Place the heatsink atop the CPU and make sure
the push pins aim to the pin hole on the
motherboard.Pressing down the push pins
diagonally.
The top of Female Push Pin
Female Push Pin
Fig. 2
(Turning the push pin along the direction of arrow is
to remove the heatsink, on the contrary, is to install.)
Please note the direction of arrow sign on the male
push pin doesn't face inwards before installation. (This
instruction is only for Intel boxed fan)
Fig. 4
Please make sure the Male and Female push pin are
joined closely. (for detailed installation instructions,
please refer to the heatsink installation section of the
user manual)
Fig. 5
Please check the back of motherboard after
installing. If the push pin is inserted as the picture,
the installation is complete.
The heatsink may adhere to the CPU as a result of hardening of the heatsink paste.To prevent
such an occurrence, it is suggested that either thermal tape rather than heat sink paste be used for
heat dissipation or using extreme care when removing the heatsink.
GA-G1975X Motherboard - 14 -
Fig. 6
Finally, please attach the power connector of the
heatsink to the CPU fan header located on the
motherboard.
1-4 Installation of Memory
Before installing the memory modules, please comply with the following conditions:
1. Please make sure that the memory used is supported by the motherboard. It is
recommended that memory of similar capacity, specifications and brand be used.
2. Before installing or removing memory modules, please make sure that the computer
power is switched off to prevent hardware damage.
3. Memory modules have a foolproof insertion design. A memory module can be installed
in only one direction. If you are unable to insert the module, please switch the direction.
The motherboard supports DDR II memory modules, whereby BIOS will automatically detect memory
capacity and specifications. Memory modules are designed so that they can be inserted only in one direction.
The memory capacity used can differ with each slot.
Notch
DDR II
English
Fig.1
The DIMM socket has a notch, so the DIMM memory module
can only fit in one direction. Insert the DIMM memory module
vertically into the DIMM socket. Then push it down.
Fig.2
Close the plastic clip at both edges of the DIMM sockets to
lock the DIMM module.
Reverse the installation steps when you wish to remove the
DIMM module.
Hardware Installation- 15 -
English
Dual Channel Memory Configuration
The GA-G1975X supports the Dual Channel Technology. After operating the
Dual Channel Technology, the bandwidth of Memory Bus will add double.
GA-G1975X includes 4 DIMM sockets, and each Channel has two DIMM
sockets as following:
Channel A : DDR II 1, DDR II 2
Channel B : DDR II 3, DDR II 4
If you want to operate the Dual Channel Technology, please note the following explanations due
to the limitation of Intel chipset specifications.
1. Dual Channel mode will not be enabled if only one DDR II memory module is installed.
2. To enable Dual Channel mode with two or four memory modules (it is recommended to use
memory modules of identical brand, size, chips, and speed), you must install them into DIMM
sockets of the same color.
The following is a Dual Channel Memory configuration table: (DS: Double Side, SS: Single Side)
DDR II 1 DDR II 2 DDR II 3 DDR II 4
2 memory modules
4 memory modules
DS/SS X DS/SS X
X DS/SS X DS/SS
DS/SS DS/SS DS/SS DS/SS
GA-G1975X Motherboard - 16 -
1-5 Installation of Expansion Cards
You can install your expansion card by following the steps outlined below:
1. Read the related expansion card's instruction document before install the expansion card into the
computer.
2. Remove your computer's chassis cover, screws and slot bracket from the computer.
3. Press the expansion card firmly into expansion slot in motherboard.
4. Be sure the metal contacts on the card are indeed seated in the slot.
5. Replace the screw to secure the slot bracket of the expansion card.
6. Replace your computer's chassis cover.
7. Power on the computer, if necessary, setup BIOS utility of expansion card from BIOS.
8. Install related driver from the operating system.
Installing a PCI Express x 16 expansion card:
Please carefully pull out the small white-
drawable bar at the end of the PCI Ex-
press x 16 slot when you try to install/
uninstall the VGA card. Please align the
VGA card to the onboard PCI Express x
16 slot and press firmly down on the slot.
Make sure your VGA card is locked by
the small white-drawable bar.
English
To release an installed card, users can
also press the latch on the opposite side
of the drawable bar as the picture to the
left shows.
The PCIE_12V power connector supplies
extra power to the PCIEx 16 slots. Connect
this connector depending on your system
requirements.
Hardware Installation- 17 -
English
1-6 Configuring a Multi-Graphics Cards System
1-6-1 Configuring a Multi View System
This function is supported only on Windows XP operating system.
With Multi View technology from GIGABYTE, Dual Graphic enabled motherboards offer multiple display
support on up to eight separate monitors. This improves the capabilities and productivity of the user by
allowing them to spread multiple windows over eight monitors and view them simultaneously.
Multiple display support for increasing productivity
Multiple display support for immersive video
Before you begin--
The exact power requirement will depend on your overall system configurations. You need a
power supply that can provide sufficient and stable power to your system and the two
graphics cards. We recommend a power supply that supplies 400W (or above) and 25A (or
above) +12V current.
If you wish to enable the Multi View function, install two or three similar graphics cards into the
PCIE_16_1, PCIE_16_2, PCIE_4_1, PCIE_4_2 slots
identical brand and chips. For example: GIGABYTE GV-NX66T128D).
If you want to set up a single or dual graphics card system, we recommend installing the graphics
card(s) on the PCIE_16 slot(s) to ensure better display performance.
(Note) In order to enable the Dual Graphic function correctly, you have to install at least one graphics
card into the PCIE_16 slot.
GA-G1975X Motherboard - 18 -
(Note)
. (It is recommended to use graphics cards of
1-6-2 Configuring an ATi CrossFireTM System
To enable CrossFireTM technology on the motherboard, you need one ATI CrossFireTM Edition graphics
card (master) and one standard CrossFireTM-ready ATI RADEON graphics card (slave).
Before you begin--
I. Power Requirements:
Before installation, assure that the power supply you use is able to provide sufficient power to fully
support an CrossFire configuration and other components in your system. We recommend a power
supply that provides at least 20A 12V current. Please note that the exact power requirements will
depend on your overall system configurations.
II. Supported Operating Systems:
Only Windows XP operating system is currrently supported by the ATI CrossFire
Enabling CrossFire Mode--
Connecting Two Graphics Cards:
Step 1: Observe the steps in "1-5 Installation of Expansion Cards"
on page 17 and install the master graphics card (ATI
CrossFire Edition) in the PCIE_16_1 slot and the slave
graphics card (ATI standard CrossFire-ready) in the
PCIE_16_2 slot.
Step 2: Attach the CrossFire cable (included with the CrossFire
Edition graphics card) to the DMS connector of the master
card and to the DVI connector of the slave card.
DMS Connector
(Master Card)
DVI-I Connector
(Slave card)
TM
technology.
English
Step 3: Connect your LCD monitor to the CrossFire cable
or connect your VGA monitor via an adapter.
Graphics Card Driver Setting:
Step 1: After installing graphics card driver in operating
system, access the ATI CATALYST Control
Center. From the ATI CATALYST Control
Center, enter the CrossFire menu and assure to
select the Enable CrossFire checkbox to com-
plete the configuration.
Hardware Installation- 19 -
English
1-7 I/O Back Panel Introduction
PS/2 Keyboard and PS/2 Mouse Connector
To install a PS/2 port keyboard and mouse, plug the mouse to the upper port (green) and the
keyboard to the lower port (purple).
Line In
Devices like CD-ROM, walkman etc. can be connected to Line In jack.
Line Out
Connect the stereo speakers, earphone or front surround speakers to this connector.
MIC In
Microphone can be connected to MIC In jack.
LAN Port
The provided Internet connection is Gigabit Ethernet (PCI Express Gigabit), providing data
transfer speeds of 10/100/1000Mbps.
USB Port
Before you connect your device(s) into USB connector(s), please make sure your device(s)
such as USB keyboard, mouse, scanner, zip, speaker...etc. have a standard USB interface.
Also make sure your OS supports USB controller. If your OS does not support USB controller,
please contact OS vendor for possible patch or driver upgrade. For more information please
contact your OS or device(s) vendors.
You can use audio software to configure 2-/4-/5.1-/6.1-/7.1-channel audio functioning.
GA-G1975X Motherboard - 20 -
1-8 Connectors Introduction
English
13
12
21
14
1) ATX_12V_2X4
2) ATX (Power Connector)
3) PCIE_12V
4) CPU_FAN
5) SYS_FAN
6) PWR_FAN
7) FDD
8) IDE1 / IDE2
9) SATAII0_1 / SATAII2_3
10) BATTERY
11) F_PANEL
3
20
16
1114
2
6
7
8
19
10
5
9
18
8
1517 22
12) F_AUDIO
13) CD_IN
14) SPDIF_IO
15) F_USB1 / F_USB2 / GREEN_USB
16) F1_1394 / F2_1394
17) RF_ID
18) PWR_LED
19) C I
20) COMA
21) SUR_CEN
22) PW1 / PW2
Hardware Installation- 21 -
1/2) ATX_12V_2X4/ATX (Power Connector)
With the use of the power connector, the power supply can supply enough stable power to all the
components on the motherboard. Before connecting the power connector, please make sure that
English
all components and devices are properly installed. Align the power connector with its proper
location on the motherboard and connect tightly.
The ATX 12V (2x4) power connector mainly supplies power to the CPU. If the ATX 12V (2x4)
power connector is not connected, the system will not start. If you wish to install a power supply
that provides ATX 12V (2x2) power connector, please connect the ATX 12V power connector to
the Pin 3, 4, 7,8 of the onboard ATX_12V_2X4 power connector according to the pin definitions.
Important Use of a power supply providing an ATX 12V (2x4) power connector is recommended
by processor manufacturer when using Intel Pentium D Extreme Edition processor.
Caution! Please use a power supply that is able to handle the system voltage requirements. It
is recommended that a power supply that can withstand high power consumption be used
(400W or greater). If a power supply is used that does not provide the required power, the result
can lead to an unstable system or a system that is unable to start. If you use a power supply
that provides a 24-pin ATX or 2x4 pin ATX 12V power connector, please remove the small cover
on the power connector on the motherboard before plugging in the power cord ; otherwise, please
do not remove it.
5
1
13
24
1
12
Pin No. Definition
1 3.3V
2 3.3V
3 GND
4 +5V
5 GND
6 +5V
7 GND
8 Power Good
9 5V SB(stand by +5V)
10 +12V
11 +12V(Only for 24-pin ATX)
12 3.3V(Only for 24-pin ATX)
8
4
Pin No. Definition
1 GND
2 GND
3 GND
4 GND
5 +12V
6 +12V
7 +12V
8 +12V
Pin No. Definition
13 3.3V
14 -12V
15 GND
16 PS_ON(soft On/Off)
17 GND
18 GND
19 GND
20 -5V
21 +5V
22 +5V
23 +5V (Only for 24-pin ATX)
24 GND(Only for 24-pin ATX)
GA-G1975X Motherboard - 22 -
3) PCIE_12V (Power Connector)
The PCIE_12V power connector supplies extra power to the PCIE x 16 slot. Connect this
connector depending on your system requirements.
1
PIin No. Definition
1NC
2 GND
3 GND
4 +12V
4/5/6) CPU_FAN / SYS_FAN / PWR_FAN (Cooler Fan Power Connector)
The cooler fan power connector supplies a +12V power voltage via a 3-pin/4-pin (only for
CPU_FAN) power connector and possesses a foolproof connection design.
Most coolers are designed with color-coded power connector wires. A red power connector
wire indicates a positive connection and requires a +12V power voltage. The black connector
wire is the ground wire (GND).
Please remember to connect the power to the cooler to prevent system overheating and failure.
Caution!
Please remember to connect the power to the CPU fan to prevent CPU overheating and failure.
English
1
CPU_FAN
1
SYS_FAN / PWR_FAN
Pin No. Definition
1 GND
2 +12V
3 Sense
4 Speed Control
(Only for CPU_FAN)
Hardware Installation- 23 -
English
7) FDD (Floppy Connector)
The FDD connector is used to connect the FDD cable while the other end of the cable connects to the
FDD drive. The types of FDD drives supported are: 360KB, 720KB, 1.2MB, 1.44MB and 2.88MB.
Please connect the red power connector wire to the pin1 position.
34
2
33
1
8) IDE1 / IDE2 (IDE Connector)
An IDE device connects to the computer via an IDE connector. One IDE connector can connect to one
IDE cable, and the single IDE cable can then connect to two IDE devices (hard drive or optical drive).
If you wish to connect two IDE devices, please set the jumper on one IDE device as Master and the
other as Slave (for information on settings, please refer to the instructions located on the IDE
device).To ensure that an IDE CD-ROM drive can work properly, please attach it to the IDE 1
connector.
IDE1
40
39
GA-G1975X Motherboard - 24 -
2
1
2
1
IDE2
40
39
9) SATAII0_1 / SATAII2_3 (SATA 3Gb/s Connector)
SATA 3Gb/s can provide up to 300MB/s transfer rate. Please refer to the BIOS setting for the Serial
ATA and install the proper driver in order to work properly.
English
10) BATTERY
1
7
7
1
Pin No. Definition
1 GND
2 TXP
3 TXN
4 GND
5RXN
6 RXP
7 GND
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended
by the manufacturer.
Dispose of used batteries according to the manufacturer's
instructions.
If you want to erase CMOS...
1. Turn OFF the computer and unplug the power cord.
2. Take out the battery gently and put it aside for about 10
minutes (Or you can use a metal object to connect the
positive and negative pins in the battery holder to make
them short for one minute).
3. Re-install the battery.
4. Plug the power cord and turn ON the computer.
Hardware Installation- 25 -
English
11) F_PANEL (Front Panel Jumper)
Please connect the power LED, PC speaker, reset switch and power switch etc. of your chassis
front panel to the F_PANEL connector according to the pin assignment below.
Speaker Connector
PW-
MSG-
1920
Reset Switch
NC
RES+
RES-
HD-
HD+
12
IDE Hard Disk
Active LED
SPEAK-
SPEAK+
Power Switch
Message LED/
Power/
Sleep LED
PW+
MSG+
HD (IDE Hard Disk Active LED) Pin 1: LED anode(+)
(Blue) Pin 2: LED cathode(-)
SPEAK (Speaker Connector) Pin 1: Power
(Amber) Pin 2- Pin 3: NC
Pin 4: Data(-)
RES (Reset Switch) Open: Normal
(Green) Close: Reset Hardware System
PW (Power Switch) Open: Normal
(Red) Close: Power On/Off
MSG (Message LED/Power/Sleep LED) Pin 1: LED anode(+)
(Yellow) Pin 2: LED cathode(-)
NC ( Purple) NC
GA-G1975X Motherboard - 26 -
12) F_AUDIO (Front Audio Connector)
If you wish to use the front audio function, connect the front panel audio module to this connector.
Check the pin assignments carefully while you connect the front panel audio module. Incorrect
connection between the module and connector will make the audio device unable to work or even
damage it. For optional front panel audio module, please contact your chassis manufacturer.
Pin No. Definition
1 MIC
2 GND
910
3 MIC_BIAS
4NC
12
5 FrontAudio(R)
6NC
7NC
8 No Pin
9 FrontAudio (L)
10 NC
13) CD_IN (CD IN)
Connect CD-ROM or DVD-ROM audio out to the connector.
English
Pin No. Definition
1
1 CD-L
2 GND
3 GND
4 CD-R
Hardware Installation- 27 -
English
14) SPDIF_IO (SPDIF In/Out)
The SPDIF output is capable of providing digital audio to external speakers or compressed AC3 data to
an external Dolby Digital Decoder. Use this feature only when your stereo system has digital input
function. Use SPDIF IN feature only when your device has digital output function.
Be careful with the polarity of the SPDIF_IO connector. Check the pin assignment carefully while you
connect the SPDIF cable, incorrect connection between the cable and connector will make the
device unable to work or even damage it. For optional SPDIF cable, please contact your local
dealer.
Pin No. Definition
1 Power
2 No Pin
3 SPDIF
1625
4 SPDIFI
5 GND
6 GND
15) F_ USB1 / F_USB2 / GREEN_USB (Front USB Connector)
Be careful with the polarity of the front USB connector. Check the pin assignments carefully while you
connect the front USB cable, incorrect connection between the cable and connector will make the
device unable to work or even damage it. For optional front USB cable, please contact your local dealer.
The GREEN_USB connector provides no standby power when system is off and it does not support
USB device to wake up from S3 mode. Users who wish to shut down the standby power
USB devices during system power-off can connect the devices to this connector via the optional front
USB cable.
Pin No. Definition
2
10
1
9
1 Power(5V)
2 Power(5V)
3 USB DX-
4 USB Dy-
5 USB DX+
6 USB Dy+
7 GND
8 GND
9 No Pin
10 NC
(note)
for their
(Note) When the standby power is shut down, USB devices (example: optical mouses) will not light
on during system power-off.
GA-G1975X Motherboard - 28 -
16) F1_1394 / F2_1394 (IEEE 1394 Connector)
Serial interface standard set by Institute of Electrical and Electronics Engineers, which has features like
high speed, highbandwidth and hot plug. Be careful with the polarity of the IEEE1394 connector. Check
the pin assignment carefully while you connect the IEEE1394 cable, incorrect connection between the
cable and connector will make the device unable to work or even damage it. For optional IEEE1394
cable, please contact your local dealer.
English
2
F2_1394
1
Pin No. Definition
1 Power(12V)
2 Power(12V)
3 TPA0+
4 TPA0-
5 GND
6 GND
7 TPB0+
8 TPB0-
9 Power(12V)
10 Power(12V)
11 TPA1+
12 TPA1-
13 GND
14 No Pin
15 TPB1+
16 TPB1-
F1_1394
Pin No. Definition
1 TPA2+
2 TPA2-
3 GND
4 GND
5 TPB2+
6 TPB2-
7 No Pin
8 Power(12V)
9 Power(12V)
10 GND
2
1
10
9
17) RF_ID
This connector allows you to connect external devices to use extra function. Check the pin
assignments before you connect the external device cable. Please contact your nearest dealer for
the optional GIGABYTE external device.
26
1
5
Pin No. Definition
1 Power
2 RFID_RI-
3 RF_TXD
4 RF_RXD
5 No Pin
6 GND
16
15
Hardware Installation- 29 -
English
18) PWR_LED
The PWR_LED connector is connected with the system power indicator to indicate whether the
system is on/off. It will blink when the system enters suspend mode.
Pin No. Definition
1 MPD+
2 MPD-
1
3 MPD-
19) CI (Chassis Intrusion, Case Open)
This 2-pin connector allows your system to detect if the chassis cover is removed. You can check
the "Case Opened" status in BIOS Setup.
GA-G1975X Motherboard - 30 -
Pin No. Definition
1 Signal
2 GND
1
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