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
(
)
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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)
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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.
(
)
*
Only for GA-8I845G.
Hardware Installation- 15 -
1-7 Connectors Introduction
English
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.
English
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.
English
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.
English
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 -
English
GA-8I845G(-C) Motherboard - 26 -
Оглавление
- GA-8I845G(-C ) Motherboard Layout
- Block Diagram
- Chapter 1 Hardware Installation
- Chapter 2 BIOS Setup
- Chapter 3Drivers Installation
- Chapter 4 Appendix
