Intel 4127, 4112 User Manual

GA-945GCM-S2L/ GA-945GCM-S2C

LGA775 socket motherboard for Intel® Core Intel® Pentium® processor family/Intel® Celeron® processor family

User's Manual

Rev. 1007 12ME-945GCMS2-1007R

processor family/

GA-945GCM-S2L/GA-945GCM-S2C

Aug. 27, 2007

GA-945GCM-S2L/

GA-945GCM-S2C

Motherboard

The logo is exclusively licensed to GIGABYTE UNITED INC. by GIGA-BYTE TECHNOLOGY CO., LTD.

GIGABYTE UNITED INC. is designated by GIGA-BYTE TECHNOLOGY CO., LTD as the exclusive global distributor of GIGABYTE branded motherboards.

Disclaimer

Information in this manual is protected by copyright laws and is the property of GIGABYTE. Changes to the specifications and features in this manual may be made by GIGABYTE without prior notice. No part of this manual may be reproduced, copied, translated, transmitted, or published in any form or by any means without GIGABYTE's prior written permission.

Documentation Classifications

In order to assist in the use of this product, GIGABYTE provides the following types of documentations:

 For detailed product information, carefully read the User's Manual.  For instructions on how to use GIGABYTE's unique features, read or download the

information on/from the Support\Motherboard\Technology Guide page on our website.

For product-related information, check on our website at: http://www.gigabyte.com.tw

Identifying Your Motherboard Revision

The revision number on your motherboard looks like this: "REV: X.X." For example, "REV: 1.0" means the revision of the motherboard is 1.0. Check your motherboard revision before updating motherboard BIOS, drivers, or when looking for technical information.

Example:

Table of Contents

Box Contents ................................................................................................................. 6

Optional Items................................................................................................................. 6

GA-945GCM-S2L/GA-945GCM-S2C Motherboard Layout............................................ 7

Block Diagram................................................................................................................ 8

Chapter 1 Hardware Installation .................................................................................... 9

1-1 Installation Precautions ..................................................................................... 9

1-2 Product Specifications .................................................................................... 10

1-3 Installing the CPU and CPU Cooler .............................................................. 13

1-3-1 Installing the CPU ................................................................................................13

1-3-2 Installing the CPU Cooler ................................................................................... 15

1- 4 Installing the Memory ..................................................................................... 16

1-4-1 Dual Channel Memory Configuration ................................................................ 16

1-4-2 Installing a Memory............................................................................................. 17

1- 5 Installing an Expansion Card ......................................................................... 1 8

1- 6 Back Panel Connectors ................................................................................. 1 9

1- 7 Internal Connectors ........................................................................................ 21

Chapter 2 BIOS Setup................................................................................................. 31

2-1 Startup Screen................................................................................................ 32

2- 2 The Main Menu .............................................................................................. 3 3

2- 3 Standard CMOS Features ............................................................................. 3 5

2-4 Advanced BIOS Features..............................................................................37

2-5 Integrated Peripherals ..................................................................................... 39

2- 6 Power Management Setup ............................................................................. 43

2- 7 PnP/PCI Configurations................................................................................. 45

2- 8 PC Health Status ........................................................................................... 4 6

2-9 Frequency/Voltage Control ............................................................................. 48

2-10 Load Fail-Safe Defaults................................................................................... 50

2- 1 1 Load Optimized Defaults ................................................................................. 50

2-12 Set Supervisor/User Password..................................................................... 51

2-13 Save & Exit Setup......................................................................................... 52

2-14 Exit Without Saving ....................................................................................... 52

- 4 -

Chapter 3 Drivers Installation ...................................................................................... 53

3- 1 Installing Chipset Drivers ............................................................................... 53

3-2 Software Applications ..................................................................................... 5 4

3- 3 Driver CD Information .................................................................................... 5 4

3- 4 Hardware Information ..................................................................................... 55

3-5 Contact Us..................................................................................................... 55

Chapter 4 Unique Features......................................................................................... 57

4- 1 Xpress Recovery2 ......................................................................................... 57

4-2 BIOS Update Utilities..................................................................................... 62

4-2-1 Updating the BIOS with the Q-Flash Utility ...................................................... 62

4-2-2 Updating the BIOS with the @BIOS Utility ....................................................... 65

4- 3 EasyTune 5.................................................................................................... 67

4- 4 Windows Vista ReadyBoost........................................................................... 68

Chapter 5 Appendix .................................................................................................... 69

5-1 Configuring Audio Input and Output................................................................. 69

5-1-1 Configuring 2/4/5.1-Channel Audio................................................................... 69

5-1-2 Installing the S/PDIFOut Cable (Optional) ......................................................... 72

5-1-3 Configuring Microphone Recording ................................................................... 74

5-1-4 Using the Sound Recorder ................................................................................. 76

5-2 Troubleshooting ............................................................................................... 77

5-2-1 Frequently Asked Questions ............................................................................. 77

5-2-2 Troubleshooting Procedure ................................................................................ 78

Regulatory Statements ................................................................................................. 80

- 5 -

Box Contents

GA-945GCM-S2L or GA-945GCM-S2C motherboard Motherboard driver disk User's Manual Quick Installation Guide One IDE cable and one floppy disk drive cable Two SATA 3Gb/s cables I/O Shield

• The box contents above are for reference only and the actual items shall depend on product package you obtain. The box contents are subject to change without notice.

• The motherboard image is for reference only.

Optional Items

2-port USB 2.0 bracket (Part No. 12CR1-1UB030-51R) 2-port SA TA power cable (Part No. 12CF1-2SERPW-01R) S/PDIF out cable (Part No. 12CR1-1SPOUT-02R)

- 6 -

GA-945GCM-S2L/GA-945GCM-S2C Motherboard Layout

KB_MS

ATX_12V

CPU_FAN

COMA

VGA

R_USB

AUDIO

RTL8111C RTL8101E

USB

IT8718

CODEC

CD_IN

LPT

LAN

F_AUDIO

PCI1

PCI2

SPDIF_O

FDD

PCIE_1

PCIE_16

LGA775

Intel® 945GC

BAT

SYS_FAN

CLR_CMOS

F_USB1

F_USB2

ATX

IDE

GA-945GCM-S2L/GA-945GCM-S2C

DDRII2

DDRII1

Intel® ICH7

SATAII0

MBIOS

SATAII3 SATAII2

SATAII1

PWR_LED

F_PANEL

Only for GA-945GCM-S2L. Only for GA-945GCM-S2C.

- 7 -

Block Diagram

1 PCI Express x1

PCIe CLK

(100 MHz)

PCIe CLK

(100 MHz)

PCI Express x16

PCI Express Bus

PCI Bus

D-Sub

LAN

RJ45

RTL8111C RTL8101E

LGA775

Processor

Interface

Intel 945GC

Intel ICH7

CODEC

Host

CPU CLK+/-

(Note 1)

(333

/266/200/133 MHz)

DDR2 667/533/400 MHz

Dual Channel Memory

GMCH CLK

(Note 1)

(333

/266/200/133 MHz)

BIOS

ATA-100/66/33 IDE Channel

4 SATA 3Gb/s

8 USB Ports

Floppy

IT8718

LPT Port COM Port

(Note 2)

PS/2 KB/Mouse

2 PCI

SPDIF Out

PCI CLK

(33 MHz)

Line-In(Rear Speaker Out)

Line-Out(Front Speaker Out)

Only for GA-945GCM-S2L. Only for GA-945GCM-S2C.

MIC(Center/Subwoofer Speaker Out)

(Note 1) Enable use of a CoreTM 2 CPU with 1333 MHz FSB through overclocking. You must install the

FSB 1333 MHz Core

2 CPU with DDR2 533 (or above) memory module(s).

(Note 2) Use of a 1066/800 MHz FSB CPU is required if you wish to install DDR2 667 MHz memory.

- 8 -

Chapter 1 Hardware Installation

1- 1 Installation Precautions

The motherboard contains numerous delicate electronic circuits and components which can become damaged as a result of electrostatic discharge (ESD). Prior to installation, carefully read the user's manual and follow these procedures:

• Prior to installation, do not remove or break motherboard S/N (Serial Number) sticker or warranty sticker provided by your dealer. These stickers are required for warranty validation.

• Always remove the AC power by unplugging the power cord from the power outlet before installing or removing the motherboard or other hardware components.

• When connecting hardware components to the internal connectors on the motherboard, make sure they are connected tightly and securely.

• When handling the motherboard, avoid touching any metal leads or connectors.

• It is best to wear an electrostatic discharge (ESD) wrist strap when handling electronic

components such as a motherboard, CPU or memory. If you do not have an ESD wrist strap, keep your hands dry and first touch a metal object to eliminate static electricity.

• Prior to installing the motherboard, please have it on top of an antistatic pad or within a electrostatic shielding container.

• Before unplugging the power supply cable from the motherboard, make sure the power supply has been turned off.

• Before turning on the power, make sure the power supply voltage has been set according to the local voltage standard.

• Before using the product, please verify that all cables and power connectors of your hardware components are connected.

• T o prevent damage to the motherboard, do not allow screws to come in contact with the motherboard circuit or its components.

• Make sure there are no leftover screws or metal components placed on the motherboard or within the computer casing.

• Do not place the computer system on an uneven surface

• Do not place the computer system in a high-temperature environment.

• Turning on the computer power during the installation process can lead to damage to system

components as well as physical harm to the user.

• 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.

Hardware Installation- 9 -

1- 2 Product Specifications

CPU  Support for an Intel® Core

Intel® Core

2 Duo processor/Intel® Pentium® D processor/ Intel® Pentium® 4 processor/ Intel® Celeron® processor in the LGA 775 package (Go to GIGABYTE's website for the latest CPU support list.)

 Support for Intel® Hyper-Threading Technology  L2 cache varies with CPU

Front Side Bus  1333

(Note 1)

/1066/800/533 MHz FSB

Chipset  North Bridge: Intel® 945GC Express Chipset

 South Bridge: Intel® ICH7

Memory  2 x 1.8V DDR2 DIMM sockets supporting up to 4 GB of system memory

 Dual channel memory architecture  Support for DDR2 667/533/400 MHz memory modules

(Go to GIGABYTE's website for the latest memory support list.)

Onboard Graphics  Integrated in the North Bridge Audio  Realtek ALC662 codec

 High Definition Audio  2/4/5.1-channel  Support for S/PDIF Out  Support for CD In

LAN  RTL 8111C chip (10/100/1000 Mbit)

 RTL 8101E chip (10/100 Mbit)

Expansion Slots  1 x PCI Express x16 slot

 1 x PCI Express x1 slot  2 x PCI slots

Storage Interface  South Bridge:

- 1 x IDE connector supporting ATA-100/66/33 and up to 2 IDE devices

- 4 x SATA 3Gb/s connectors supporting up to 4 SATA 3Gb/s devices

 iTE IT8718 chip:

- 1 x floppy disk drive connector supporting up to 1 floppy disk drive

USB  Integrated in the South Bridge

 Up to 8 USB 2.0/1.1 ports (4 on the back panel, 4 via the USB brackets

connected to the internal USB headers)

2 Extreme processor/

(Note 3)

(Note 2)

Only for GA-945GCM-S2L. Only for GA-945GCM-S2C.

GA-945GCM-S2L/S2C Motherboard - 10 -

Internal Connectors  1 x 24-pin ATX main power connector

 1 x 4-pin ATX 12V power connector  1 x floppy disk drive connector  1 x IDE connector  4 x SATA 3Gb/s connectors  1 x CPU fan header  1 x system fan header  1 x front panel header  1 x front panel audio header  1 x CD In connector  1 x S/PDIF Out header  2 x USB 2.0/1.1 headers  1 x chassis intrusion header  1 x power LED header

Back Panel  1 x PS/2 keyboard port Connectors  1 x PS/2 mouse port

 1 x parallel port  1 x serial port  1 x D-Sub port  4 x USB 2.0/1.1 ports  1 x RJ-45 port  3 x audio jacks (Line In/Line Out/Microphone)

I/O Controller  iTE IT8718 chip Hardware Monitor  System voltage detection

 CPU temperature detection  CPU/System fan speed detection  CPU overheating warning  CPU/System fan fail warning  CPU fan speed control

BIOS  1 x 4 Mbit flash

 Use of licensed AWARD BIOS  PnP 1.0a, DMI 2.0, SM BIOS 2.4, ACPI 1.0b

Hardware Installation- 11 -

Unique Features  Support for @BIOS

 Support for Download Center  Support for Q-Flash  Support for EasyTune

(Note 4)

 Support for Xpress Install  Support for Xpress Recovery2  Support for Virtual Dual BIOS

Bundled Software  Norton Internet Security (OEM version) Operating System  Support for Microsoft® Windows® Vista/XP Form Factor  Micro ATX form factor; 24.4cm x 19.3cm

(Note 1) Enable use of a CoreTM 2 CPU with 1333 MHz FSB through overclocking. You must install the

FSB 1333 MHz Core

2 CPU with DDR2 533 (or above) memory module(s).

(Note 2) Due to Windows Vista/XP 32-bit operating system limitation, when more than 4 GB of physical

memory is installed, the actual memory size displayed will be less than 4 GB. (Note 3) Use of a 1066/800 MHz FSB CPU is required if you wish to install DDR2 667 MHz memory. (Note 4) Available functions in Easytune may differ by motherboard model.

GA-945GCM-S2L/S2C Motherboard - 12 -

1-3 Installing the CPU and CPU Cooler

Read the following guidelines before you begin to install the CPU:

• Make sure that the motherboard supports the CPU. (Go to GIGABYTE's website for the latest CPU support list.)

• Always turn off the computer and unplug the power cord from the power outlet before installing the CPU to prevent hardware damage.

• Locate the pin one of the CPU. The CPU cannot be inserted if oriented incorrectly. (Or you may locate the notches on both sides of the CPU and alignment keys on the CPU socket.)

• Apply an even and thin layer of thermal grease on the surface of the CPU.

• Do not turn on the computer if the CPU cooler is not installed, otherwise overheating and

damage of the CPU may occur.

• Set the CPU host frequency in accordance with the CPU specifications. It is not recommended that the system bus frequency be set beyond hardware specifications since it does not meet the standard requirements for the peripherals. If you wish to set the frequency beyond the standard specifications, please do so according to your hardware specifications including the CPU, graphics card, memory, hard drive, etc.

Hyper-Threading Technology System Requirements:

(Go to Intel's website for more information about the Hyper-Threading Technology)

• An Intel® CPU that supports HT Technology

• A chipset that supports HT Technology

• An operating system that is optimized for HT Technology

• A BIOS that supports HT Technology and has it enabled

(Refer to Chapter 2, "BIOS Setup," "Advanced BIOS Features," for instructions on enabling the HT Technology.)

1-3-1 Installing the CPU

A. Locate the alignment keys on the motherboard CPU socket and the notches on the CPU.

LGA775 CPU Socket

Alignment Key

Pin One Corner of the CPU Socket

LGA 775 CPU

NotchNotch

Triangle Pin One Marking on the CPU

Hardware Installation- 13 -

B. Follow the steps below to correctly install the CPU into the motherboard CPU socket.

Before installing the CPU, make sure to turn off the computer and unplug the power cord from the power outlet to prevent damage to the CPU.

CPU Socket Lever

Step 1: Completely raise the CPU socket lever.

Step 3: Remove the protective socket cover from the load plate. (To protect the CPU socket, always replace the protective socket cover when the CPU is not installed.)

Step 5: Once the CPU is properly inserted, replace the load plate and push the CPU socket lever back into its locked position.

Step 2: Lift the metal load plate from the CPU socket. (DO NOT touch socket contacts.)

Step 4: Hold the CPU with your thumb and index fingers. Align the CPU pin one marking (triangle) with the pin one corner of the CPU socket (or you may align the CPU notches with the socket alignment keys) and gently insert the CPU into position.

GA-945GCM-S2L/S2C Motherboard - 14 -

1-3-2 Installing the CPU Cooler

Follow the steps below to correctly install the CPU cooler on the motherboard. (The following procedure uses Intel® boxed cooler as the example cooler.)

Male

Direction of the Arrow Sign on the Male Push Pin

Push Pin

The Top of Female Push Pin

Female Push Pin

Step 1: Apply an even and thin layer of thermal grease on the surface of the installed CPU.

Step 3: Place the cooler atop the CPU, aligning the four push pins through the pin holes on the motherboard. Push down on the push pins diagonally.

Step 2: Before installing the cooler, note the direction of the arrow sign on the male push pin. (Turning the push pin along the direction of arrow is to remove the cooler, on the contrary, is to install.)

Step 4: You should hear a "click" when pushing down each push pin. Check that the Male and Female push pins are joined closely. (Refer to your CPU cooler installation manual for instructions on installing the cooler.)

Step 5: After the installation, check the back of the motherboard. If the push pin is inserted as the picture above, the installation is complete.

Step 6: Finally, attach the power connector of the CPU cooler to the CPU fan header (CPU_FAN) on the motherboard.

Use extreme care when removing the CPU cooler because the thermal grease/tape between the CPU cooler and CPU may adhere to the CPU. Inadequately removing the CPU cooler may damage the CPU.

Hardware Installation- 15 -

1-4 Installing the Memory

Read the following guidelines before you begin to install the memory:

• Make sure that the motherboard supports the memory. It is recommended that memory of the same capacity, brand, speed, and chips be used. (Go to GIGABYTE's website for the latest memory support list.)

• Always turn off the computer and unplug the power cord from the power outlet before installing the memory to prevent hardware damage.

• Memory modules have a foolproof design. A memory module can be installed in only one direction. If you are unable to insert the memory, switch the direction.

1-4-1 Dual Channel Memory Configuration

This motherboard provides two DDR2 memory sockets and supports Dual Channel Technology. After the memory is installed, the BIOS will automatically detect the specifications and capacity of the memory. Enabling Dual Channel memory mode will double the original memory bandwidth.

The two DDR2 memory sockets are divided into two channels and each channel has one memory socket as following:

Channel 0: DDRII1 Channel 1: DDRII2

DDRII1

DDRII2

Due to chipset limitation, read the following guidelines before installing the memory in Dual Channel mode.

1. Dual Channel mode cannot be enabled if only one DDR2 memory module is installed.

2. When enabling Dual Channel mode with two memory modules, it is recommended that memory of the same capacity, brand, speed, and chips be used.

GA-945GCM-S2L/S2C Motherboard - 16 -

1-4-2 Installing a Memory

Before installing a memory module , make sure to turn off the computer and unplug the power cord from the power outlet to prevent damage to the memory module. DDR2 DIMMs are not compatible to DDR DIMMs. Be sure to install DDR2 DIMMs on this motherboard.

Notch

DDR2 DIMM

A DDR2 memory module has a notch, so it can only fit in one direction. Follow the steps below to correctly install your memory modules in the memory sockets.

Step 1: Note the orientation of the memory module. Spread the retaining clips at both ends of the memory socket. Place the memory module on the socket. As indicated in the picture on the left, place your fingers on the top edge of the memory, push down on the memory and insert it vertically into the memory socket.

Step 2: The clips at both ends of the socket will snap into place when the memory module is securely inserted.

Hardware Installation- 17 -

1-5 Installing an Expansion Card

Read the following guidelines before you begin to install an expansion card:

• Make sure the motherboard supports the expansion card. Carefully read the manual that came with your expansion card.

• Always turn off the computer and unplug the power cord from the power outlet before installing an expansion card to prevent hardware damage.

PCI Express x16 Slot

PCI Slot

PCI Express x1 Slot

Follow the steps below to correctly install your expansion card in the expansion slot.

1. Locate an expansion slot that supports your card. Remove the metal slot cover from the chassis back panel.

2. Align the card with the slot, and press down on the card until it is fully seated in the slot.

3. Make sure the metal contacts on the card are completely inserted into the slot.

4. Secure the card's metal bracket to the chassis back panel with a screw.

5. After installing all expansion cards, replace the chassis cover(s).

6. Turn on your computer. If necessary, go to BIOS Setup to make any required BIOS changes for your expansion card(s).

7. Install the driver provided with the expansion card in your operating system.

Example: Installing and Removing a PCI Express x16 Graphics Card:

• Installing a Graphics Card: Gently push down on the top edge of the card until it is fully inserted into the PCI Express x16 slot. Make sure the card is securely seated in the slot and does not rock.

• Removing the Card: Gently push back on the lever on the slot and then lift the card straight out from the slot.

GA-945GCM-S2L/S2C Motherboard - 18 -

1-6 Back Panel Connectors

PS/2 Keyboard and PS/2 Mouse Port

Use the upper port (green) to connect a PS/2 mouse and the lower port (purple) to connect a PS/2 keyboard.

Parallel Port

Use the parallel port to connect devices such as a printer, scanner and etc. The parallel port is also called a printer port.

Serial Port

Use the serial port to connect devices such as a mouse, modem or other peripherals.

D-Sub Port

The D-Sub port supports a 15-pin D-Sub connector. Connect a monitor that supports D-Sub connection to this port.

USB Port

The USB port supports the USB 2.0/1.1 specification. Use this port for USB devices such as an USB keyboard/mouse, USB printer, USB flash drive and etc.

RJ-45 LAN Port

The Gigabit Ethernet LAN port provides Internet connection at up to 1 Gbps data rate. The following describes the states of the LAN port LEDs.

Connection/ Speed LED

LAN Port

Activity LED

Connection/Speed LED:

State Description Orange 1 Gbps data rate Green 100 Mbps data rate Off 10 Mbps data rate

Activity LED:

State Description Blinking Data transmission or receiving is occurring Off No data transmission or receiving is occurring

• When removing the cable connected to a back panel connector, first remove the cable from your device and then remove it from the motherboard.

• When removing the cable, pull it straight out from the connector. Do not rock it side to side to prevent an electrical short inside the cable connector.

Only for GA-945GCM-S2L.

Hardware Installation- 19 -

RJ-45 LAN Port

The Fast Ethernet LAN port provides Internet connection at up to 100 Mbps data rate. The following describes the states of the LAN port LEDs.

Connection/ Speed LED

LAN Port

Activity LED

Connection/Speed LED:

State Description Green 100 Mbps data rate Off 10 Mbps data rate

Activity LED:

State Description Blinking Data transmission or receiving is occurring Off No data transmission or receiving is occurring

Line In Jack (Blue)

The default line in jack. Use this audio jack for line in devices such as an optical drive, walkman, etc.

Line Out Jack (Green)

The default line out jack. Use this audio jack for a headphone or 2-channel speaker. This jack can be used to connect front speakers in a 4/5.1-channel audio configuration.

Mic In Jack (Pink)

The default Mic in jack. Microphones must be connected to this jack.

Refer to the instructions on setting up a 2/4/5.1-channel audio configuration in Chapter 5, "Configuring 2/4/5.1-Channel Audio."

Only for GA-945GCM-S2C.

GA-945GCM-S2L/S2C Motherboard - 20 -

1-7 Internal Connectors

6 2

1) ATX_12V

2) AT X

3) CPU_FAN

4) SYS_FAN

5) FDD

6) IDE

7) SATAII0 / 1 / 2 / 3

8) PWR_LED

5 14

161413

9) B AT

10) F_PANEL

11) F_AUDIO

12) CD_IN

13) SPDIF_O

14) F_USB1 / F_USB2

15) CLR_CMOS

16) CI

10 8

Read the following guidelines before connecting external devices:

• First make sure your devices are compliant with the connectors you wish to connect.

• Before installing the devices, be sure to turn off the devices and your computer. Unplug the

power cord from the power outlet to prevent damage to the devices.

• After installing the device and before turning on the computer, make sure the device cable has been securely attached to the connector on the motherboard.

Hardware Installation- 21 -

1/2) ATX_12V/ATX (2x2 12V Power Connector and 2x12 Main 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, first make sure the power supply is turned off and all devices are properly installed. The power connector possesses a foolproof design. Connect the power supply cable to the power connector in the correct orientation. The 12V power connector mainly supplies power to the CPU. If the 12V power connector is not connected, the computer will not start.

• To meet expansion 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 or unbootable system.

• The main power connector is compatible with power supplies with 2x10 power connectors. When using a 2x12 power supply, remove the protective cover from the main power connector on the motherboard. Do not insert the power supply cable into pins under the protective cover when using a 2x10 power supply.

ATX_12V :

ATX_12V

4 2

Pin No. Definition

1 GND 2 GND 3 +12V 4 +12V

131

ATX

ATX :

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 2x12-pin ATX) 12 3.3V (Only for 2x12-pin ATX)

GA-945GCM-S2L/S2C Motherboard - 22 -

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 2x12-pin A TX) 24 GND (Only for 2x12-pin A TX)

3/4) CPU_FAN/SYS_FAN (Fan Headers)

The motherboard has a 4-pin CPU fan header (CPU_FAN) and a 3-pin system fan header (SYS_FAN). Each fan header supplies a +12V power voltage and possesses a foolproof insertion design. When connecting a fan cable, be sure to connect it in the correct orientation. Most fans are designed with color-coded power connector wires. A red power connector wire indicates a positive connection and requires a +12V voltage. The black connector wire is the ground wire. The motherboard supports CPU fan speed control, which requires the use of a CPU fan with fan speed control design. For optimum heat dissipation, it is recommended that a system fan be installed inside the chassis.

CPU_FAN :

Pin No. Definition

CPU_FAN

SYS_FAN

1 GND 2 +12V 3 Sense 4 Speed Control

SYS_FAN :

Pin No. Definition

1 GND 2 +12V 3 Sense

• Be sure to connect fan cables to the fan headers to prevent your CPU and system from overheating. Overheating may result in damage to the CPU or the system may hang.

• These fan headers are not configuration jumper blocks. Do not place a jumper cap on the headers.

5) FDD (Floppy Disk Drive Connector)

This connector is used to connect a floppy disk drive. The types of floppy disk drives supported are: 360 KB, 720 KB, 1.2 MB, 1.44 MB, and 2.88 MB. Before connecting a floppy disk drive, be sure to locate pin 1 of the connector and the floppy disk drive cable. The pin 1 of the cable is typically designated by a stripe of different color.

Hardware Installation- 23 -

6) IDE (IDE Connector)

The IDE connector supports up to two IDE devices such as hard drives and optical drives. Before attaching the IDE cable, locate the foolproof groove on the connector. If you wish to connect two IDE devices, remember to set the jumpers and the cabling according to the role of the IDE devices (for example, master or slave). (For information about configuring master/slave settings for the IDE devices, read the instructions from the device manufacturers.)

3940

7) SATAII0/1/2/3 (SATA 3Gb/s Connectors, Controlled by ICH7)

The SATA connectors conform to SATA 3Gb/s standard and are compatible with SATA 1.5Gb/s standard. Each SATA connector supports a single SATA device.

SATAII0

GA-945GCM-S2L/S2C Motherboard - 24 -

Pin No. Definition

1 GND

SATAII3

SATAII2

SATAII1

2 TXP 3 TXN 4 GND 5 RXN 6 RXP 7 GND

8) PWR_LED (System Power LED Header)

This header can be used to connect a system power LED on the chassis to indicate system power status. The LED is on when the system is operating. The LED keeps blinking when the system is in S1 sleep state. The LED is off when the system is in S3/S4 sleep state or powered off (S5).

Pin No. Definition

1 MPD+ 2 MPD-

3 MPD-

System Status L ED S0 On S1 Blinking S3/S4/S5 Off

9) BAT(BATTERY)

The battery provides power to keep the values (such as BIOS configurations, date, and time information) in the CMOS when the computer is turned off. Replace the battery when the battery voltage drops to a low level, or the CMOS values may not be accurate or may be lost.

You may clear the CMOS values by removing the battery:

1. Turn off your computer and unplug the power cord.

2. Gently remove the battery from the battery holder and wait for one minute. (Or use a metal object like a screwdriver to touch the positive and negative terminals of the battery holder, making them short for 5 seconds.)

3. Replace the battery.

4. Plug in the power cord and restart your computer.

• Always turn off your computer and unplug the power cord before replacing the battery.

• Replace the battery with an equivalent one. Danger of explosion if the battery is replaced

with an incorrect model.

• Contact the place of purchase or local dealer if you are not able to replace the battery by yourself or uncertain about the battery model.

• When installing the battery, note the orientation of the positive side (+) and the negative side (-) of the battery (the positive side should face up).

• Used batteries must be handled in accordance with local environmental regulations.

Hardware Installation- 25 -

10) F_PANEL (Front Panel Header)

Connect the power switch, reset switch, speaker and system status indicator on the chassis front panel to this header according to the pin assignments below. Note the positive and negative pins before connecting the cables.

PWMSG-

RES+

RES-

HD-

HD+

Speaker Connector

Power Switch

Message LED/

Power/

Sleep LED

SPEAK-

SPEAK+

PW+ MSG+

• MSG (Message/Power/Sleep LED):

System Status LED S0 On S1 Blinking S3/S4/S5 Off

Connects to the power status indicator on the chassis front panel . The LED is on when the system is operating. The LED keeps blinking when the system is in S1 sleep state. The LED is off when the system is in S3/S4 sleep state or powered off (S5).

• PW (Power Switch): Connects to the power switch on the chassis front panel. You may configure the way to turn off your system using the power switch (refer to Chapter 2, "BIOS Setup," "Power Management Setup," for more information).

• SPEAK (Speaker): Connects to the speaker on the chassis front panel. The system reports system startup status by issuing a beep code. One single short beep will be heard if no problem is detected at system startup. If a problem is detected, the BIOS may issue beeps in different patterns to indicate the problem. Refer to Chapter 5, "Troubleshooting," for information about beep codes.

• HD (IDE Hard Drive Activity LED) Connects to the hard drive activity LED on the chassis front panel. The LED is on when the hard drive is reading or writing data.

• RES (Reset Switch): Connects to the reset switch on the chassis front panel. Press the reset switch to restart the computer if the computer freezes and fails to perform a normal restart.

• NC: No connection

Reset Switch

IDE Hard Disk

Active LED

The front panel design may differ by chassis. A front panel module mainly consists of power switch, reset switch, power LED, hard drive activity LED, speaker and etc. When connecting your chassis front panel module to this header, make sure the wire assignments and the pin assignments are matched correctly.

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