Gigabyte GA-880GM-D2H User manual

GA-880GM-D2H
User's Manual
Rev. 4001
12ME-880GD2H-4001R

Motherboard
GA-880GM-D2H
Sept. 9, 2011
Sept. 9, 2011
Motherboard
GA-880GM-D2H

Copyright
©2011 GIGA-BYTE TECHNOLOGY CO., LTD. All rights reserved.
The trademarks mentioned in this manual are legally registered to their respective owners.
Disclaimer
Information in this manual is protected by copyright laws and is the property of GIGABYTE.
Changes to the specications and features in this manual may be made by GIGABYTE with-
out 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.
In order to assist in the use of this product, carefully read the User's Manual.
For product-related information, check on our website at: http://www.gigabyte.com
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:

- 4 -
Table of Contents
GA-880GM-D2H Motherboard Layout............................................................................5
GA-880GM-D2H Motherboard Block Diagram...............................................................6
Chapter 1 Hardware Installation .....................................................................................7
1-1 Installation Precautions ................................................................................... 7
1-2 Product Specications..................................................................................... 8
1-3 Installing the CPU and CPU Cooler............................................................... 10
1-4 Installing the Memory .....................................................................................11
1-5 Installing an Expansion Card..........................................................................11
1-6 Back Panel Connectors................................................................................. 12
1-7 Internal Connectors ....................................................................................... 14
Chapter 2 BIOS Setup ..................................................................................................21
2-1 Startup Screen............................................................................................... 21
2-2 The Main Menu.............................................................................................. 22
2-3 MB Intelligent Tweaker(M.I.T.) ....................................................................... 23
2-4 Standard CMOS Features ............................................................................. 27
2-5 Advanced BIOS Features.............................................................................. 28
2-6 Integrated Peripherals ................................................................................... 30
2-7 Power Management Setup ............................................................................ 32
2-8 PnP/PCI Congurations................................................................................. 34
2-9 PC Health Status ...........................................................................................34
2-10 Load Fail-Safe Defaults................................................................................. 35
2-11 Load Optimized Defaults ............................................................................... 36
2-12 Set Supervisor/User Password ..................................................................... 36
2-13 Save & Exit Setup.......................................................................................... 37
2-14 Exit Without Saving........................................................................................ 37
Chapter 3 Drivers Installation .......................................................................................38
Chapter 4 Appendix......................................................................................................38
Conguring SATA Hard Drive(s)............................................................................... 38
Regulatory Statements ............................................................................................. 41

- 5 -
GA-880GM-D2H Motherboard Layout
Box Contents
GA-880GM-D2H motherboard
Motherboard driver disk Two SATA cables
User's Manual I/O Shield
* The box contents above are for reference only and the actual items shall depend on the product package you obtain.
KB_MS
CPU_FAN
AM3+
ATX
GA-880GM-D2H
F_AUDIO
AUDIO
B_BIOS
DDR3_1 DDR3_2
BAT
F_PANEL
COM
ATX_12V
SATA2_0 SATA2_3
SATA2_1 SATA2_4
SATA2_2 SATA2_5
R_USB
CODEC
M_BIOS
VGA_DVI
HDMI
USB_LAN
PCIEX16
PCIEX1
PCI
F_USB1
F_USB2
SYS_FANCLR_CMOS
Atheros
GbE LAN
iTE
IT8720
AMD 880G
AMD SB710

- 6 -
GA-880GM-D2H Motherboard Block Diagram
(Note) You can use only one of the onboard digital graphics ports (HDMI and DVI-D) for out put when in
the BIOS Setup program or when during the POST screens.
Hyper Transport 3.0
AMD 880G
CPU CLK+/- (200 MHz)
Dual Channel Memory
PCI Bus
AM3+/AM3 CPU
1 PCI
PCI CLK
(33 MHz)
DDR3 1866(O.C.)/1600/1066 MHz
COM Port
iTE
IT8720
LPC
Bus
PS/2 KB/Mouse
Dual BIOS
8 USB Ports
6 SATA 3Gb/s
AMD SB710
PCI Express Bus
PCIe CLK
(100 MHz)
x1
LAN
RJ45
Atheros
GbE LAN
PCIe CLK
(100 MHz)
1 PCI Express x16
x16
1 PCI Express x1
x1
GFX CLK (100 MHz)
D-Sub
DVI-D (Note)
Line-Out (Front Speaker Out)
MIC (Center/Subwoofer Speaker Out)
Line-In (Rear Speaker Out)
CODEC
HDMI (Note)
Switch

- 7 -
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 com-•
ponents such as a motherboard, CPU or memory. If you do not have an ESD wrist strap,
keep your hands dry and rst touch a metal object to eliminate static electricity.
Prior to installing the motherboard, please have it on top of an antistatic pad or within an•
electrostatic shielding container.
Before unplugging the power supply cable from the motherboard, make sure the power sup-•
ply 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 hard-•
ware 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 sys-•
tem 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 certied computer technician.
Chapter 1 Hardware Installation

- 8 -
1-2 ProductSpecications
CPU AM3+ Socket:
- AMD AM3+ processor
- AMD AM3 Phenom™II processor/ AMD Athlon™II processor
(Go to GIGABYTE's website for the latest CPU support list.)
Hyper Transport
Bus 5200 MT/s
Chipset North Bridge: AMD 880G
South Bridge: AMD SB710
Memory 2 x 1.5V DDR3 DIMM sockets supporting up to 8 GB of system memory
* Due to Windows 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.
Dual channel memory architecture
Support for DDR3 1866(O.C.)/1600/1066 MHz memory modules
(Go to GIGABYTE's website for the latest supported memory speeds and memory
modules.)
Onboard
Graphics
North Bridge:

- 1 x D-Sub port
- 1 x DVI-D port, supporting a maximum resolution of 2560x1600
* The DVI-D port does not support D-Sub connection by adapter.
* The resolution of 2560x1600 is supported only when Dual Link DVI mode is enabled.
- 1 x HDMI port, supporting a maximum resolution of 1920x1200
* Simultaneous output for DVI-D and HDMI is not supported.
Audio Realtek/VIA HD audio codec
High Denition Audio
2/4/5.1/7.1-channel
* To enable 7.1-channel audio, you have to use an HD front panel audio module and
enable the multi-channel audio feature through the audio driver.
LAN 1 x Atheros GbE LAN chip (10/100/1000 Mbit)
Expansion Slots 1 x PCI Express x16 slot, running at x16
1x PCI Express x1 slot
(All PCI Express slots conform to the PCI Express 2.0 standard.)
1 x PCI slot
Storage Interface South Bridge:
- 6 x SATA 3Gb/s connectors supporting up to 6 SATA 3Gb/s devices
- Support for SATA RAID 0, RAID 1, RAID 10, and JBOD
USB 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)
Internal
Connectors
1 x 24-pin ATX main power connector
1 x 4-pin ATX 12V power connector
6 x SATA 3Gb/s connectors
1 x CPU fan header
1 x system fan header
1 x front panel header

- 9 -
Internal
Connectors
1 x front panel audio header
2 x USB 2.0/1.1 headers
1 x serial port header
1 x clearing CMOS jumper
Back Panel
Connectors
1 x PS/2 keyboard port
1 x PS/2 mouse port
1 x D-Sub port
1 x DVI-D port
1 x HDMI 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 IT8720 chip
Hardware
Monitor
System voltage detection
CPU/System temperature detection
CPU/System fan speed detection
CPU overheating warning
CPU/System fan fail warning
CPU fan speed control
* Whether the CPU fan speed control function is supported will depend on the CPU
cooler you install.
BIOS 2 x 16 Mbit ash
Use of licensed AWARD BIOS
Support for DualBIOS™
PnP 1.0a, DMI 2.0, SM BIOS 2.4, ACPI 1.0b
Unique Features Support for @BIOS
Support for Q-Flash
Support for Xpress BIOS Rescue
Support for Download Center
Support for Xpress Install
Support for Xpress Recovery2
Support for EasyTune
* Available functions in EasyTune may differ by motherboard model.
Support for Smart Recovery
Support for Auto Green
Support for ON/OFF Charge
Support for Cloud OC
Support for Q-Share

- 10 -
1-3 Installing the CPU and CPU Cooler
Installing the CPU
A. Locate the pin one (denoted by a small triangle) of the CPU socket and the CPU.
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.
• 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 dam-
age of the CPU may occur.
• Set the CPU host frequency in accordance with the CPU specications. It is not recommended
that the system bus frequency be set beyond hardware specications since it does not meet the
standard requirements for the peripherals. If you wish to set the frequency beyond the standard
specications, please do so according to your hardware specications including the CPU, graph-
ics card, memory, hard drive, etc.
AM3+/AM3 CPU
A Small Triangle Marking
Denotes CPU Pin One
AM3+ Socket
A Small Triangle Mark
Denotes Pin One of the
Socket
Bundled
Software Norton Internet Security (OEM version)
Operating
System Support for Microsoft®Windows 7/Vista/XP
Form Factor Micro ATX Form Factor; 24.4cm x 20.6cm
* GIGABYTE reserves the right to make any changes to the product specications and product-related information
without prior notice.

- 11 -
1-4 Installing the Memory
Due to CPU limitations, read the following guidelines before installing the memory in Dual Channel mode.
Dual Channel mode cannot be enabled if only one DDR3 memory module is installed.1.
When enabling Dual Channel mode with two memory modules, it is recommended that memory of2.
the same capacity, brand, speed, and chips be used for optimum performance.
DualChannelMemoryConguration
This motherboard provides two DDR3 memory sockets and supports Dual Channel Technology. After the
memory is installed, the BIOS will automatically detect the specications and capacity of the memory. En-
abling Dual Channel memory mode will double the original memory bandwidth.
The two DDR3 memory sockets are divided into two channels and each channel has one memory socket as
following:
Channel 0: DDR3_1
Channel 1: DDR3_2
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 supported memory speeds and memory modules.)
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 direc-•
tion. If you are unable to insert the memory, switch the direction.
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.
DDR3_1 DDR3_2

- 12 -
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.
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.
DVI-D Port (Note 1) (Note 2)
The DVI-D port conforms to the DVI-D specication and supports a maximum resolution of 2560x1600.
Connect a monitor that supports DVI-D connection to this port. Please note that the actual resolutions
supported are dependent on the monitor being used and the resolution of 2560x1600 is supported only
when Dual Link DVI mode is enabled. The DisplayPort, D-Sub, and HDMI ports will be disabled when
Dual Link DVI mode is enabled (refer to Chapter 2, "BIOS Setup," "Advanced BIOS Features," "IGX
Conguration," for more information).
HDMI Port (Note 2)
HDMI (High-Denition Multimedia Interface) is an all-digital audio/video interface capable of transmitting un-
compressed audio/video signals. The HDMI port is HDCP compliant and supports Dolby TrueHD and DTS HD
Master Audio formats. It also supports up to 192KHz/24bit 8-channel LPCM audio output. You can use this port
to connect your HDMI-supported monitor. The maximum supported resolution is 1920x1200, but the actual
resolutions supported are dependent on the monitor being used.
When removing the cable connected to a back panel connector, rst 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.
(Note 1) The DVI-D port does not support D-Sub connection by adapter.
(Note 2) Simultaneous output for DVI-D and HDMI is not supported.
After installing the HDMI device, make sure to set the default sound playback device to HDMI. (The item
name may differ depending on your operating system. The screenshot below is from Windows 7.)
In Windows 7, select Start>Control Panel>Hardware and
Sound>Sound>Playback, set Realtek HDMI Output - ATI HDMI
Audio to the default playback device.

- 13 -
Activity LED
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
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 4/5.1/7.1-channel audio conguration.
Mic In Jack (Pink)
The default Mic in jack. Microphones must be connected to this jack.
To enable 7.1-channel audio, you have to use an HD front panel audio module and enable the
multi-channel audio feature through the audio driver.
USB 2.0/1.1 Port
The USB port supports the USB 2.0/1.1 specication. Use this port for USB devices such as a USB key-
board/mouse, USB printer, USB ash 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.

- 14 -
1-7 Internal Connectors
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.
1) ATX_12V
2) ATX
3) CPU_FAN
4) SYS_FAN
5) SATA2_0/1/2/3/4/5
6) F_PANEL
7) F_AUDIO
8) F_USB1/F_USB2
9) COM
10) CLR_CMOS
11) BAT
1
2
6
3
10 9
7
11 5
84

- 15 -
DEBUG
PORT
G.QBOFM
131
2412
ATX
ATX:
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 com-
ponents on the motherboard. Before connecting the power connector, rst 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 con-
nector 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 (500W 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.
ATX_12V：
Pin No. Denition
1 GND
2 GND
3 +12V
4 +12V
Pin No. Denition Pin No. Denition
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 5VSB (stand by +5V) 21 +5V
10 +12V 22 +5V
11 +12V (Only for 2x12-pin ATX) 23 +5V (Only for 2x12-pin ATX)
12 3.3V (Only for 2x12-pin ATX) 24 GND (Only for 2x12-pin ATX)
ATX_12V
3
4
1
2

- 16 -
3/4) CPU_FAN/SYS_FAN (Fan Headers)
The motherboard has a 4-pin CPU fan header (CPU_FAN), a 3-pin system fan header (SYS_FAN). Most
fan headers possess a foolproof insertion design. When connecting a fan cable, be sure to connect it in
the correct orientation (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 dis-
sipation, it is recommended that a system fan be installed inside the chassis.
Be sure to connect fan cables to the fan headers to prevent your CPU and system from overheating. Over-•
heating may result in damage to the CPU or the system may hang.
These fan headers are not conguration jumper blocks. Do not place a jumper cap on the headers.•
CPU_FAN:
SYS_FAN:
Pin No. Denition
1 GND
2 +12V
3 Sense
4 Speed Control
Pin No. Denition
1 GND
2 +12V
3 Sense
5) SATA2_0/1/2/3/4/5 (SATA 3Gb/s Connectors, Controlled by AMD SB710 South Bridge)
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. The AMD SB710 South Bridge supports RAID 0,
RAID 1, RAID 10, and JBOD. Refer to Chapter 5, "Conguring SATA Hard Drive(s)," for instructions on
conguring a RAID array.
Please connect the L-shaped end of
the SATA cable to your SATA hard
drive.
Pin No. Denition
1 GND
2 TXP
3 TXN
4 GND
5 RXN
6 RXP
7 GND
CPU_FAN
SYS_FAN
DEBUG
PORT
G.QBOFM
1
1
7
7
7
1
1
1
DEBUG
PORT
G.QBOFM
DEBUG
PORT
G.QBOFM
DEBUG
PORT
G.QBOFM
DEBUG
PORT
G.QBOFM
DEBUG
PORT
G.QBOFM
DEBUG
PORT
G.QBOFM
SATA2_2
SATA2_1
SATA2_0
SATA2_5
SATA2_4
SATA2_3
• A RAID 0 or RAID 1 conguration requires at least two hard
drives. If more than two hard drives are to be used, the total
number of hard drives must be an even number.
• A RAID 10 conguration requires four hard drives.

- 17 -
6) F_PANEL (Front Panel Header)
Connect the power switch, reset switch, speaker, chassis intrusion switch/sensor and system status
indicator on the chassis to this header according to the pin assignments below. Note the positive and
negative pins before connecting the cables.
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 assign-
ments are matched correctly.
Power LED
DEBUG PORT
G.QBOFM
12
1920
CI-
CI+
PWR-
PWR+
MSG-
PW-
SPEAK+
SPEAK-
MSG+
PW+
Message/Power/
Sleep LED
Speaker
Power
Switch
HD-
RES+
HD+
RES-
Hard Drive
Activity LED
Reset
Switch
Chassis Intrusion
Header
PW•(Power Switch, Red):
Connects to the power switch on the chassis front panel. You may congure 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, Orange):
Connects to the speaker on the chassis front panel. The system reports system startup status by is-
suing 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.
HD•(Hard Drive Activity LED, Blue)
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, Green):
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.
CI•(Chassis Intrusion Header, Gray):
Connects to the chassis intrusion switch/sensor on the chassis that can detect if the chassis cover
has been removed. This function requires a chassis with a chassis intrusion switch/sensor.
MSG/PWR•(Message/Power/Sleep LED, Yellow/Purple):
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 sys-
tem is in S1 sleep state. The LED is off when the system is in S3/S4 sleep
state or powered off (S5).

- 18 -
7) F_AUDIO (Front Panel Audio Header)
The front panel audio header supports Intel High Denition 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 con-
nector 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.
The front panel audio header supports HD audio by default.•
Audio signals will be present on both of the front and back panel audio connections simultane-•
ously.
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.
For HD Front Panel Audio: For AC'97 Front Panel Audio:
Pin No. Denition
1 MIC2_L
2 GND
3 MIC2_R
4 -ACZ_DET
5 LINE2_R
6 GND
7 FAUDIO_JD
8 No Pin
9 LINE2_L
10 GND
Pin No. Denition
1 MIC
2 GND
3 MIC Power
4 NC
5 Line Out (R)
6 NC
7 NC
8 No Pin
9 Line Out (L)
10 NC
8) F_USB1/F_USB2 (USB 2.0/1.1 Headers)
The headers conform to USB 2.0/1.1 specication. Each USB header can provide two USB ports via an
optional USB bracket. For purchasing the optional USB bracket, please contact the local dealer.
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.
Pin No. Denition
1 Power (5V)
2 Power (5V)
3 USB DX-
4 USB DY-
5 USB DX+
6 USB DY+
7 GND
8 GND
9 No Pin
10 NC
10
9
2
1
10
9
2
1

- 19 -
Pin No. Denition
1 NDCD-
2 NSIN
3 NSOUT
4 NDTR-
5 GND
6 NDSR-
7 NRTS-
8 NCTS-
9 NRI-
10 No Pin
9) COM (Serial Port Header)
The COM header can provide one serial port via an optional COM port cable. For purchasing the op-
tional COM port cable, please contact the local dealer.
10) CLR_CMOS (Clearing CMOS Jumper)
Use this jumper to clear the CMOS values (e.g. date information and BIOS congurations) 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.
Always turn off your computer and unplug the power cord from the power outlet before clear-•
ing 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 De-•
faults) or manually congure the BIOS settings (refer to Chapter 2, "BIOS Setup," for BIOS
congurations).
Open: Normal
Short: Clear CMOS Values
10
9
2
1

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11) BAT (Battery)
The battery provides power to keep the values (such as BIOS congurations, 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:
Turn off your computer and unplug the power cord.1.
Gently remove the battery from the battery holder and wait for one minute.2.
(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.)
Replace the battery.3.
Plug in the power cord and restart your computer.4.
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 your-•
self 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.•