Gigabyte GA-945GCM-S2L: Chapter 1 Hardware Installation
Chapter 1 Hardware Installation: Gigabyte GA-945GCM-S2L
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.
• To 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
®
TM
CPU Support for an Intel
Core
2 Extreme processor/
®
TM
®
®
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
(Note 1)
Front Side Bus 1333
/1066/800/533 MHz FSB
®
Chipset North Bridge: Intel
945GC Express Chipset
®
South Bridge: Intel
ICH7
(Note 2)
Memory 2 x 1.8V DDR2 DIMM sockets supporting up to 4 GB of system memory
Dual channel memory architecture
(Note 3)
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)
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
(Note 4)
Support for EasyTune
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
TM
(Note 1) Enable use of a Core
2 CPU with 1333 MHz FSB through overclocking. You must install the
TM
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 recom-
mended 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 fre-
quency 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
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:
Step 2:
Completely raise the CPU socket lever.
Lift the metal load plate from the CPU socket.
(DO NOT touch socket contacts.)
Step 3:
Step 4:
Remove the protective socket cover from the
Hold the CPU with your thumb and index
load plate. (To protect the CPU socket, always
fingers. Align the CPU pin one marking (triangle)
replace the protective socket cover when the
with the pin one corner of the CPU socket (or
CPU is not installed.)
you may align the CPU notches with the socket
alignment keys) and gently insert the CPU
into position.
Step 5:
Once the CPU is properly inserted, replace
the load plate and push the CPU socket lever
back into its locked 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
Push Pin
Direction of
the Arrow Sign
on the Male
The Top
Push Pin
of Female
Push Pin
Female
Push Pin
Step 1:
Step 2:
Apply an even and thin layer of thermal grease
Before installing the cooler, note the direction
on the surface of the installed CPU.
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 3:
Step 4:
Place the cooler atop the CPU, aligning the
You should hear a "click" when pushing down each
four push pins through the pin holes on the
push pin. Check that the Male and Female push pins
motherboard. Push down on the push pins
are joined closely. (Refer to your CPU cooler instal-
diagonally.
lation manual for instructions on installing the cooler.)
Step 5:
Step 6:
After the installation, check the back of the
Finally, attach the power connector of the CPU
motherboard. If the push pin is inserted as the
cooler to the CPU fan header (CPU_FAN) on
picture above, the installation is complete.
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
Activity LED
Connection/Speed LED:
Activity LED:
State Description
State Description
Orange 1 Gbps data rate
Blinking Data transmission or receiving is occurring
Green 100 Mbps data rate
Off No data transmission or receiving is occurring
Off 10 Mbps data rate
LAN Port
• 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
Activity LED
Connection/Speed LED:
Activity LED:
State Description
State Description
Green 100 Mbps data rate
Blinking Data transmission or receiving is occurring
Off 10 Mbps data rate
Off No data transmission or receiving is occurring
LAN Port
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
1
3
6
2
11
10
9
15
8
7
12
5 14
413
16
1) ATX_12V
9) BAT
2) ATX
10) F_PANEL
3) CPU_FAN
11) F_AUDIO
4) SYS_FAN
12) CD_IN
5) FDD
13) SPDIF_O
6) IDE
14) F_USB1 / F_USB2
7) SATAII0 / 1 / 2 / 3
15) CLR_CMOS
8) PWR_LED
16) CI
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 :
Pin No. Definition
3
4
1 GND
1
2
2 GND
ATX_12V
3 +12V
4 +12V
ATX :
12
24
Pin No. Definition
Pin No. Definition
1 3.3V
13 3.3V
2 3.3V
14 -12V
3 GND
15 GND
4 +5V
16 PS_ON(soft On/Off)
5 GND
17 GND
6 +5V
18 GND
7 GND
19 GND
8 Power Good
20 -5V
9 5V SB(stand by +5V)
21 +5V
10 +12V
22 +5V
11 +12V (Only for 2x12-pin ATX)
23 +5V (Only for 2x12-pin ATX)
131
12 3.3V (Only for 2x12-pin ATX)
24 GND (Only for 2x12-pin ATX)
ATX
GA-945GCM-S2L/S2C Motherboard - 22 -
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
1 GND
1
2 +12V
CPU_FAN
3 Sense
4 Speed Control
SYS_FAN :
Pin No. Definition
1
1 GND
2 +12V
SYS_FAN
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.
33
1
34
2
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
12
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.
Pin No. Definition
1 GND
7
1
2 TXP
SATAII3
3 TXN
7
1
4 GND
SATAII2
5 RXN
7
1
6 RXP
7
1
SATAII1
7 GND
SATAII0
GA-945GCM-S2L/S2C Motherboard - 24 -
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-
1
3 MPD-
System Status LED
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.
20
19
SPEAK-
Speaker Connector
SPEAK+
NC
PW-
RES+
Power Switch
Reset Switch
PW+
RES-
MSG-
HD-
Message LED/
IDE Hard Disk
MSG+
HD+
Power/
Active LED
12
Sleep LED
• MSG (Message/Power/Sleep LED):
System Status LED
Connects to the power status indicator on the chassis front panel. The
S0 On
LED is on when the system is operating. The LED keeps blinking when
S1 Blinking
the system is in S1 sleep state. The LED is off when the system is in
S3/S4/S5 Off
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
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 assign-
ments and the pin assignments are matched correctly.
GA-945GCM-S2L/S2C Motherboard - 26 -
11) F_AUDIO (Front Panel Audio Header)
The front panel audio header supports Intel High Definition audio (HD) and AC'97 audio. You may
connect your chassis front panel audio module to this header. Make sure the wire assignments of
the module connector match the pin assignments of the motherboard header. Incorrect connection
between the module connector and the motherboard header will make the device unable to work
or even damage it.
For HD Front Panel Audio:
For AC'97 Front Panel Audio:
Pin No. Definition
Pin No. Definition
2
10
1 MIC2_L
1 MIC
2 GND
2 GND
1
9
3 MIC2_R
3 MIC Power
4 -ACZ_DET
4NC
5 LINE2_R
5 Line Out (R)
6 FAUDIO_JD
6NC
7 GND
7NC
8 No Pin
8 No Pin
9 LINE2_L
9 Line Out (L)
10 FAUDIO_JD
10 NC
• The front panel audio header supports HD audio by default. If your chassis provides an
AC'97 front panel audio module, refer to the instructions on how to activate AC'97 functioninality
via the audio software in Chapter 5, "Configuring 2/4/5.1-Channel Audio."
• Audio signals will be present on both of the front and back panel audio connections
simultaneously. If you want to mute the back panel audio (only supported when using an HD
front panel audio module), refer to Chapter 5, "Configuring 2/4/5.1-Channel Audio."
• Some chassis provide a front panel audio module that has separated connectors on each
wire instead of a single plug. For information about connecting the front panel audio
module that has different wire assignments, please contact the chassis manufacturer.
12) CD_IN (CD In Connector)
You may connect the audio cable that came with your optical drive to the header.
Pin No. Definition
1
1 CD-L
2 GND
3 GND
4 CD-R
Hardware Installation- 27 -
13) SPDIF_O (S/PDIF Out Header)
This header supports digital S/PDIF out. Via an optional S/PDIF out cable, this header can connect
to an audio device that supports digital audio in. For purchasing the optional S/PDIF out cable,
please contact the local dealer.
Pin No. Definition
1 Power
1
2 SPDIFO
3 GND
Pin 1 (the red wire) of the S/PDIF out cable must align with pin 1 of the SPDIF_O header.
Incorrect connection may render the device unusable or even result in damage to the
device.
14) F_USB1/F_USB2 (USB Headers)
The headers conform to USB 2.0/1.1 specification. Each USB header can provide two USB ports
via an optional USB bracket. For purchasing the optional USB bracket, please contact the local
dealer.
Pin No. Definition
9
1
1 Power (5V)
210
2 Power (5V)
3 USB DX-
4USB DY-
5 USB DX+
6 USB DY+
7 GND
8 GND
9 No Pin
10 NC
• Do not plug the IEEE 1394 bracket (2x5-pin) cable into the USB header.
• Prior to installing the USB bracket, be sure to turn off your computer and unplug the
power cord from the power outlet to prevent damage to the USB bracket.
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15) CLR_CMOS (Clearing CMOS Jumper)
Use this jumper to clear the CMOS values (e.g. date information and BIOS configurations) and
reset the CMOS values to factory defaults. To clear the CMOS values, place a jumper cap on the
two pins to temporarily short the two pins or use a metal object like a screwdriver to touch the two
pins for a few seconds.
Open: Normal
Short: Clear CMOS Values
• Always turn off your computer and unplug the power cord from the power outlet before
clearing the CMOS values.
• After clearing the CMOS values and before turning on your computer, be sure to remove
the jumper cap from the jumper. Failure to do so may cause damage to the motherboard.
• After system restart, go to BIOS Setup to load factory defaults (select Load Optimized
Defaults) or manually configure the BIOS settings (refer to Chapter 2, "BIOS Setup," for
BIOS configurations).
16) CI (Chassis Intrusion Header)
This motherboard provides a chassis detection feature that detects if the chassis cover has been
removed. This function requires a chassis with chassis intrusion detection design.
Pin No. Definition
1 Signal
1
2 GND
Hardware Installation- 29 -
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