Gigabyte GA-8I845G: Chapter 1 Hardware Installation

Chapter 1 Hardware Installation: Gigabyte GA-8I845G

English

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.

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 -

1-2 Feature Summary

®

®

CPU Supports the latest Intel

Pentium

4 Socket 478 CPU

Supports 533/400MHz FSB

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L2 cache varies with CPU

®

Chipset North Bridge: Intel

845G

®

South Bridge: Intel

ICH4

Memory 3 DDR DIMM memory slots (supports up to 2GB memory)

Supports 2.5V DDR DIMM

Supports DDR 266/200 DIMM

Slots 5 PCI slots

1 AGP slot

IDE Connections 2 IDE connection (UDMA 33/ATA 66/ATA 100), allows connection of 4

IDE devices

FDD Connections 1 FDD connection, allows connection of 2 FDD devices

Peripherals 1 parallel port supporting Normal/EPP/ECP mode

1 VGA port, 1 Serial port (COMA), onboard COMB connection

6 USB 2.0/1.1 ports (rear x 2, front x 4 via cable)

1 front audio connector

1 PS/2 keyboard port

1 PS/2 mouse port

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Onboard LAN

*

Onboard RTL8100C Chipset (10/100 Mbit)

1 RJ 45 port

®

Onboard VGA Built-in Intel

845G Chipset

Onboard Audio C-Media 9761A CODEC

Supports Line In ; Line Out ; MIC In

Supports 2 / 4 / 6 channel audio

Supports SPDIF In/Out connection

CD In/AUX In/Game Port

I/O Control IT8712

Hardware Monitor System voltage detection

CPU temperature detection

CPU / System fan speed detection

CPU warning temperature

CPU / System fan failure warning

BIOS Use of licensed AWARD BIOS

Supports Q-Flash

Additional Features Supports @BIOS

Supports EasyTune

Overclocking Over Clock via BIOS (CPU/AGP/PCI/DDR)

Form Factor ATX form factor; 29.5cm x 21.0cm

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Only for GA-8I845G.

GA-8I845G(-C) Motherboard - 10 -

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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

Pentium 4 Processor with HT Technology

- Chipset: An ATi 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

Fig. 1

Fig. 2

Angling the

Angling the rod to 65-

Pull the rod to the

Socket

0

rod to 65

degree maybe feel a

90-degree directly.

Actuation

kind of tight , and then

Lever

continue pull the rod to

90-degree when a

"click" noise is heard.

Fig. 3

Fig. 4

Pin1 indicator

CPU Top View

Locate Pin 1 in the

socket and look

for a (golden) cut edge

on the CPU

upper corner. Then

insert the CPU

into the socket.

Hardware Installation- 11 -

Pin1 indicator

1-3-2 Installation of the Heatsink

Before installing the CPU cool fan , adhere to the following warning:

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1. Please use Intel approved cooling fan.

2. We recommend you to apply the thermal tape to provide better heat conduction

between your CPU and cooling fan.

(The CPU cooling fan might stick to the CPU due to the hardening of the

thermal paste. During this condition if you try to remove the cooling fan, you

might pull the processor out of the CPU socket alone with the cooling fan, and

might damage the processor. To avoid this from happening, we suggest you to

either use thermal tape instead of thermal paste, or remove the cooling fan with

extreme caution.)

3. Make sure the CPU fan power cable is plugged in to the CPU fan connector, this

completes the installation. Please refer to CPU cooling fan user's manual for

more detail installation procedure.

Fig.1

Fig. 2

Fasten the cooling fan

Make sure the CPU fan

supporting-base onto

is plugged to the CPU

the CPU socket on the

fan connector, than

motherboard.

install complete.

GA-8I845G(-C) Motherboard - 12 -

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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 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

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- 13 -

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

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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 AGP expansion card:

Please carefully pull out the small white-

drawable bar at the end of the AGP slot

when you try to install/uninstall the VGA

card. Please align the VGA card to the

onboard AGP slot and press firmly down on

the slot. Make sure your VGA card is locked

by the small white-drawable bar.

GA-8I845G(-C) Motherboard - 14 -

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1-6 I/O Back Panel Introduction

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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).

Parallel Port

The parallel port allows connection of a printer, scanner and other peripheral devices.

COM A (Serial Port)

Connects to serial-based mouse or data processing devices.

VGA Port

Monitor can be connected to VGA port.

Game/MIDI port

This connector supports joystick, MIDI keyboard and other related audio devices.

Line Out (Front Speaker Out)

Connect the stereo speakers, earphone or front surround channels to this connector.

Line In

Devices like CD-ROM, walkman etc. can be connected to Line In jack.

MIC In

Microphone can be connected to MIC In jack.

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LAN Port

*

The provided Internet connection is fast Ethernet, providing data transfer speeds of 10/100Mbps.

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-/6-channel audio functioning.

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)

*

Only for GA-8I845G.

Hardware Installation- 15 -

1-7 Connectors Introduction

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3

2

1

12

5

9

17

11

4

10

18

6

13

16

15

14

8

7

1) ATX_12V

10) CD_IN

2) ATX (Power Connector)

11) AUX_IN

3) CPU_FAN

12) SUR_CEN

4) SYS_FAN

13) SPDIF_IO

5) FDD

14) F_USB1 / F_USB2

6) IDE1/IDE2

15) COMB

7) PWR_LED

16) CI

8) F_PANEL

17) CLR_CMOS

9) F_AUDIO

18) BAT

GA-8I845G(-C) Motherboard - 16 -

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1/2) ATX_12V/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 all

components and devices are properly installed. Align the power connector with its proper location on

the motherboard and connect tightly.

The ATX_12V power connector mainly supplies power to the CPU. If the ATX_12V power

connector is not connected, the system will not start.

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 (300W 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.

Pin No. Definition

4

2

1 GND

2 GND

3

1

3 +12V

4 +12V

Pin No. Definition

11 1

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)

20 10

10 +12V

11 3.3V

12 -12V

13 GND

14 PS_ON(soft on/off)

15 GND

16 GND

17 GND

18 -5V

19 +5V

20 +5V

Hardware Installation- 17 -

3/4) CPU_FAN / SYS_FAN (Cooler Fan Power Connector)

The cooler fan power connector supplies a +12V power voltage via a 3-pin power connector and

possesses a foolproof connection design.

Most coolers are designed with color-coded power connector wires. A red power connector wire

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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.

1

CPU_FAN

Pin No. Definition

1 GND

2 +12V

3 Sense

1

SYS_FAN

5) 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

33

2

1

GA-8I845G(-C) Motherboard - 18 -

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6) 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).

39

1

IDE2

IDE1

40

2

7) PWR_LED

PWR_LED is connect 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+

1

2 MPD-

3 MPD-

Hardware Installation- 19 -

8) F_PANEL (Front Panel Jumper)

Please connect the power LED, PC peaker, reset switch and power switch etc of your chassis front

panel to the F_PANEL connector according to the pin assignment below.

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Speaker Connector

Message LED/

Power/

Power

Sleep LED

Switch

PW+

MSG+

MSG-

PW-

SPEAK+

SPEAK-

2

20

1

19

HD-

RES+

NC

HD+

RES-

Reset Switch

IDE Hard Disk Active LED

HD (IDE Hard Disk Active LED) Pin 1: LED anode(+)

Pin 2: LED cathode(-)

SPEAK (Speaker Connector) Pin 1: Power

Pin 2- Pin 3: NC

Pin 4: Data(-)

RES (Reset Switch) Open: Normal

Close: Reset Hardware System

PW (Power Switch) Open: Normal

Close: Power On/Off

MSG(Message LED/Power/Sleep LED) Pin 1: LED anode(+)

Pin 2: LED cathode(-)

NC NC

GA-8I845G(-C) Motherboard - 20 -

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9) F_AUDIO (Front Audio Connector)

Please make sure the pin assigment on the cable is the same as the pin assigment on the MB header.

To find out if the chassis you are buying support front audio panel connector, please contact your

dealer. If you want to use "Front Audio" connector, you must remove the jumpers from pins 5-6,

9-10.

Pin No. Definition

1 MIC

2 GND

10

9

3 MIC_BIAS

4 POWER

2

1

5 FrontAudio(R)

6 Rear Audio (R)/ Return R

7NC

8 No Pin

9 FrontAudio (L)

10 Rear Audio (L)/ Return L

10) CD_IN (CD IN)

Connect CD-ROM or DVD-ROM audio out to the connector.

Pin No. Definition

1 CD-L

1

2 GND

3 GND

4 CD-R

Hardware Installation- 21 -

11) AUX_IN (AUX In Connector)

Connect other device (such as PCI TV Tunner audio out) to the connector.

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Pin No. Definition

1

1 AUX-L

2 GND

3 GND

4 AUX-R

12) SUR_CEN

Please contact your nearest dealer for optional SUR_CEN cable.

Pin No. Definition

1 SUR OUTL

6

5

2 SUR OUTR

2

1

3 GND

4 No Pin

5 CENTER_OUT

6 BASS_OUT

GA-8I845G(-C) Motherboard - 22 -

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13) 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

6

2 No Pin

3 SPDIF

1

5

4 SPDIFI

5 GND

6 GND

14) F_ USB1 / F_USB2 (Front USB Connector)

Be careful with the polarity of the front USB connector. Check the pin assignment 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.

Pin No. Definition

1 Power

2 Power

2

10

3 USB DX-

4 USB Dy-

5 USB DX+

1

9

6 USB Dy+

7 GND

8 GND

9 No Pin

10 NC

Hardware Installation- 23 -

15) COMB (COM B Connector)

Be careful with the polarity of the COMB connector. Check the pin assignments while you connect

the COMB cable. Please contact your nearest dealer for optional COMB cable.

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Pin No. Definition

1 NDCD B-

2 NSIN B

2

10

3 NSOUT B

4 NDTR B-

19

5 GND

6 NDSR B-

7 NRTS B-

8 NCTS B-

9 NRI B-

10 No Pin

16) 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.

Pin No. Definition

1

1 Signal

2 GND

GA-8I845G(-C) Motherboard - 24 -

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17) CLR_CMOS (Clear CMOS)

You may clear the CMOS data to its default values by this jumper. To clear CMOS, temporarily

short 1-2 pin. Default doesn't include the "Shunter" to prevent from improper use this jumper.

1

Open: Normal

1

Short: Clear CMOS

18) BAT(Battery)

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 -

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GA-8I845G(-C) Motherboard - 26 -