Intel G41 Express Chipset User manual

USER'S MANUAL
Of
Intel G41 Express Chipset
&
Intel ICH7 Chipset
Based
M/B for LGA 775 Quad Core Ready
Intel Core Processor Family
No. G03-MI5G41SVMD3F
Rev: 10
Release date: May
， 2010
Trademark:
* Specifications and Information contained in this documentation are furnished for information use only, and are
subject to change at any time without notice, and should not be construed as a commitment by manufacturer.

ii
Environmental Safety Instruction
zAvoid the dusty, humidity and temperature extremes. Do not place the product in any
area where it may become wet.
z0 to 40 centigrade is the suitable temperature. (The figure comes from the request of
the main chipset)
zGenerally speaking, dramatic changes in temperature may lead to contact malfunction
and crackles due to constant thermal expansion and contraction from the welding
spots’ that connect components and PCB. Computer should go through an adaptive
phase before it boots when it is moved from a cold environment to a warmer one to
avoid condensation phenomenon. These water drops attached on PCB or the surface
of the components can bring about phenomena as minor as computer instability
resulted from corrosion and oxidation from components and PCB or as major as short
circuit that can burn the components. Suggest starting the computer until the
temperature goes up.
zThe increasing temperature of the capacitor may decrease the life of computer. Using
the close case may decrease the life of other device because the higher temperature in
the inner of the case.
zAttention to the heat sink when you over-clocking. The higher temperature may
decrease the life of the device and burned the capacitor.
Environmental Protection Announcement
Do not dispose this electronic device into the trash while discarding. To minimize pollution
and ensure environment protection of mother earth, please recycle.

ii
CHAPTER 1 INTRODUCTION OF INTEL G41 MOTHERBOARD SERIES
1-1 FEATURES OF MOTHERBOARD .............................................................................1
1-1.1 SPECIAL FEATURES OF MOTHERBOARD...............................................2
1-2 SPECIFICATION.........................................................................................................3
1-3 ITEM CHECKLIST.......................................................................................................3
1-4 LAYOUT DIAGRAM....................................................................................................4
CHAPTER 2 HARDWARE INSTALLATION
2-1 INSTALL LGA 775 SUPPORTED INTEL PROCESSOR...........................................5
2-2 INSTALL MEMORY ....................................................................................................5
2-3 EXPANSION CARDS..................................................................................................6
CHAPTER 3 CONNCTORS, HEADERS & JUMPERS SETTING
3-1 CONNECTORS ...........................................................................................................7
3-2 HEADERS ...................................................................................................................9
3-3 JUPPER SETTING......................................................................................................11
CHAPTER 4 USEFUL HELP
4-1 HOW TO UPDATE BIOS ............................................................................................13
4-2 TROUBLE SHOOTING...............................................................................................13
TABLE OF CONTENT

1
Chapter 1
Introduction of Intel G41 Motherboard Series
1-1 Features of motherboard
The Intel G41 chipset motherboard series are based on the latest Intel G41 Express
Chipset and Intel ICH7 Chipset technology which supports the innovative 65nm and
90nm Intel®Core 2 Quad, Intel®Core 2 Duo®(Code Name: Conroe) Processor，Intel®
Pentium®Dual Core Processor, Celeron®Dual Core Processor and Celeron®400
Processor with Intel®Hyper-Threading Technology and fully supports the future 45nm
processors. The motherboard is optimized to deliver innovative features and
professional desktop platform solution for those who demand the best experience of
personal computing.
The motherboard implements Intel G41 Express Chipset which supports Front Side
Bus 1333MHz of data transferring. The board supports dual-channel DDRIII 800
/DDRIII 1066MHz RAM Module expandable to 8GB. The motherboard is embedded
with ICH7 chipset of providing one parallel Ultra ATA 100 interface for two IDE drives,
also providing two serial ATA2 interface of 3Gb / s data transfer rate for two serial ATA
devices.
The G41 motherboard series offer one PCI-Express x16 graphics slot of 8Gbyte/sec
data transfer rate at each relative direction which gets 7 times of bandwidth more than
AGP 8X and up to 16Gbyte/sec peak concurrent bandwidth at full speed to guarantee
the ultimate GPU computing performance. One 32-bit PCI slot also enriches
connectivity for the I/O of peripherals. The motherboards are designed of tackling the
profuse multimedia requirements nowadays.
The motherboards provide 10/100 Ethernet LAN function by using the PCI-E megabit
LAN. The embedded Realtek ALC 662 chipset is fully compatible with Sound Blaster
Pro standards providing HD audio 6-CH CODEC offers you with the home cinema
quality and satisfying software compatibility.
Embedded USB controller as well as capability of expanding to 6 of USB 2.0
functional ports delivering 480Mb/s of rich connectivity, these motherboards meet the
demands of future USB peripherals which are also equipped with hardware monitor
function on system to monitor and protect your system and maintain your non-stop
business computing.
Some special features---CPU Thermal Throttling/ CPU Vcore 7-shift /CPU Vcore
Input/Output OC-CON )in this motherboard are designed for power user to use the
over-clocking function in more flexible ways. But please be caution that the
over-clocking maybe causes the fails in system reliabilities. This motherboard
provides the guaranteed performance and meets the demands of the next generation

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computing. But if you insist to gain more system performance with variety possibilities
of the components you choose, please be careful and make sure to read the detailed
descriptions of these value added product features, please get them in the coming
section.
1-1.1 Special Features of Motherboard
CPU Thermal Throttling Technology---The CPU Overheat Protection
Technology
To prevent the increasing heat from damage of CPU or accidental shutdown while at
high workload, the CPU Thermal Throttling Technology will force CPU to enter
partially idle mode from 87.5% to 12.5% according to preset CPU operating
temperature in BIOS (from 40℃to 90℃). When the system senses the CPU
operating temperature reaching the preset value, the CPU operating bandwidth will be
decreased to the preset idle percentage to cool down the processor. When at
throttling mode the beeper sound can be optionally selected to indicate it is in working.
CPU Vcore 7-Shift---Shift to Higher Performance
The CPU voltage can be adjusted up by 7 steps for the precisely over-clocking of
extra demanding computing performance.
CPU Vcore Input/Output Solid Capacitors---High-polymer Solid Electrolysis
Aluminum Capacitors
The working temperature is from 55 degrees Centigrade below zero to 125 degrees
Centigrade, Solid capacitors possess superior physical characteristics that can be
while reducing the working temperature between 20 degrees Centigrade each time,
intact extension 10 times of effective product operation lives, at not rising degrees
Centigrade of working temperatures each time a relative one, life of product decline
10% only too.

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1-2 Specification
Spec Description
Design zMicro ATX form factor; PCB size: 22.5*17.1cm
Chipset zIntel G41 Memory Controller Hub (MCH) Chipset
zIntel 82801GB I/O Controller Hub (ICH7) Chipset
CPU Socket
(LGA775 )
zSupports the innovative 65nm and 90nm Intel® Celeron®400, Intel®
Celeron® Dual Core, Pentium®Dual Core Processor, Intel®Core 2
Quad, Intel®Core 2 Duo®(Code Name: Conroe) Processor with
Intel®Hyper-Threading Technology and fully supports the future
45nm processors.
zSuggest the power of the CPU should below 65W
zSupport FSB Frequency 1333 / 1066 / 800/533 MHz
Memory Socket
z240-pin DDRIII RAM module socket x 2
zSupports two DDRIII 800 /DDRIII1066MHz RAM Module expandable
to 8GB
zSupport dual-channel function
Expansion Slots zPCI-Express x16 slot 1pcs.
z32-bit PCI slot 1pcs
Integrate IDE and
Serial ATA2
zOne PCI IDE controller that supports PCI Bus Mastering, ATA
PIO/DMA and the ULTRA DMA 33/66/100 functions that deliver the
data transfer rate up to 100 MB/s; two Serial ATA2 ports each
provides 3.0 Gb /sec data transfer rate.
Integrated VGA zIntegrated Graphic Media Accelerator 4500
LAN
zIntegrated PCI-E 10/100 LAN chip
zSupport Fast Ethernet LAN function of providing 10Mb / 100Mb
data transfer rate
HD Audio
zRealtek ALC662 Azalia 6-channel Audio Codec integrated
zAudio driver and utility included
BIOS zAMI 8MB DIP Flash ROM
Multi I/O
zPS/2 keyboard and PS/2 mouse connectors
zSerial port x1
zD-Sub 15-pin VGA Conn.
zUSB 2.0 connector x 4, headers x1
zRJ-45 LAN connector x1
zAudio connector x1 (Line-in, Line-out, MIC)
zHDMI-SPDIF header x1
zSATA Connector x2
1-3 Item Checklist
5Intel G41 Platform Processor Chipset based motherboard
5DVD for motherboard utilities
5SATA cable
5User’s manual
5Back panel

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1-4 Layout Diagram
ATX 12V Power
Connector
Front Panel
Header
ATX Power
Connector
CPU Socket mPGA775
Intel 82801GB
ICH Chipset
Power Led &
Speaker Header
DDRIII
DIMMx2
ALC662
HD Audio Codec
32-bit PCI Slot
Serial Port
K
B／MS Power ON
Jumper (JP1)
USB Ports SYSFAN1
Front Panel
Audio Heade
r
Megabit LAN Chip
IDE Connector
Serial-ATA2
Connector (SATA1, 2)
CPU FAN
VGA Port
RJ-45 Ove
r
USB Ports
PCI Express x16 Slot
Intel G41Express
Chipset
USB Power ON Jumper (JP2)
PS2 KB/Mouse
Port
USB Header
HDMI-SPDIF Header
6-CH
Audio Connector
RJ45 LAN
PS/2 Mouse Port
PS/2 Keyboard Port
Line-IN
Line-OUT
MIC-IN
USB Ports
Serial Port VGA Port

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Chapter 2
Hardware Installation
2-1 Install LGA 775 Supported Intel Processor
This motherboard provides a 775-pin surface mount, LGA775 Land Grid Array socket,
referred to as the LGA775 socket supports Intel Pentium Dual Core processor in the
775 Pin package utilizes Flip-Chip Land Grid Array (FC-LGA) package technology.
The CPU that comes with the motherboard should have a cooling FAN attached to
prevent overheating. If this is not the case, then purchase a correct cooling FAN
before you turn on your system.
WARNING! 1.Be sure that there is sufficient air circulation across the processor’s
heatsink and CPU cooling FAN is working correctly, otherwise it may
cause the processor and motherboard overheat and damage, you
may install an auxiliary cooling FAN, if necessary.
2
. Suggest the power of CPU should below 65w.
To install a CPU, first turn off your system and remove its cover. Locate the LGA775
socket and open it by first pulling the level sideways away from the socket then
upward to a 90-degree angle. Insert the CPU with the correct orientation as shown
below. The notched corner should point toward the end of the level. Because the CPU
has a corner pin for two of the four corners, the CPU will only fit in the orientation as
shown.
CPU LGA775 Socket
Colden Arrow
LGA775
2-2 Install Memory
The board provides two 240-pin DDRIII DUAL INLINE MEMORY MODULES (DIMM)
socket for DDRIII memory expansion to maximum memory volume of 8GB DDRIII
SDRAM.
Valid Memory Configuration
Bank 240-Pin DIMM PCS Total Memory
Bank 0, 1 (DIMM1) DDRIII 800/ DDRIII 1066 X1 4GB
Bank 2, 3 (DIMM2) DDRIII 800/ DDRIII 1066 X1 4GB
Total Memory (Max.4GB)
2 8GB

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Recommend DIMM Module Combination
1. One DIMM Module ----Plug in DIMM1
2. Two DIMM Modules---Plug in DIMM1 and DIMM2 for Dual channel function
For Dual channel Limited!
1. Dual channel function only supports when 2 DIMM Modules plug in either both DIMM1
& DIMM2
2. DIMM1 & DIMM2 must be the same type, same size, and same frequency for dual
channel function.
Install memory modules to your motherboard is not difficult, you can refer to figure
below to see how to install a memory module.
NOTE! When you install DIMM module fully into the DIMM socket the eject
tab should be locked into the DIMM module very firmly and fit into its
indention on both sides.
2-3 Expansion Cards
The G41 motherboard series offer one PCI-Express x16 graphics slot of 8Gbyte/sec
data transfer rate at each relative direction which gets 7 times of bandwidth more than
AGP 8X and it’s up to a peak concurrent bandwidth of 16Gbyte/sec at full speed to
guarantee the ultimate GPU computing performance. One 32-bit PCI slot enriches the
rich connectivity for the I/O of peripherals. The motherboards are designed of tackling
the profuse multimedia requirements nowadays.
.

7
Chapter 3
Connectors, Headers & Jumpers Setting
3-1 Connectors
(1) Power Connector (24-pin block): ATXPWR
ATX Power Supply connector:
This is a new defined 24-pins
connector that usually comes
with ATX case. The ATX Power
Supply allows using soft power
on momentary switch that
connect from the front panel
switch to 2-pins Power On jumper
pole on the motherboard. When
the power switch on the back of
the ATX power supply turned on,
the full power will not come into
the system board until the front
panel switch is momentarily
pressed. Press this switch again will turn off the power to the system board.
** We recommend that you use an ATX 12V Specification 2.0-compliant power
supply unit (PSU) with a minimum of 350W power rating. This type has 24-pin
and 4-pin power plugs.
** If you intend to use a PSU with 20-pin and 4-pin power plugs, make sure that the
20-pin power plug can provide at least 15A on +12V and the power supply unit
has a minimum power rating of 350W. The system may become unstable or may
not boot up if the power is inadequate.
PE1 / PCI-E x16 Slot
32-bit PCI Slot
Pin 1
ROW1 ROW2
24-Pin
ROW1 ROW2
Pin 1
20-Pin
PIN ROW1 ROW2
1 3.3V 3.3V
2 3.3V -12V
3 GND GND
4 5V Soft Power On
5 GND GND
6 5V GND
7 GND GND
8 Power OK -5V
9 +5V (for Soft Logic) +5V
10 +12V +5V
11 +12V +5V
12 +3V GND

8
20-pinpowerplug 24-pinpowerplug
(2) ATX 12V Power Connector (4-pin block) : ATX12V
This is a new defined 4-pin connector that usually comes with ATX Power
Supply. The ATX Power Supply which fully supports AM2 processor must
including this connector for support extra 12V voltage to maintain system power
consumption. Without this connector might cause system unstable because the
power supply can not provide sufficient current for system.
(3) PS/2 Mouse & PS/2 Keyboard Connector: KB1
The connectors are for PS/2 keyboard and PS/2 Mouse.
(4) USB Port connector: USB ports from USB1, UL1
The connectors are 4-pin connectors that connect USB devices to the system
board.
(5) LAN Port connector: RJ-45 LAN from UL1
This connector is standard RJ-45 connector for Network which supports
10M/100Mbps data transfer rat
(6) Audio Line-In, Lin-Out, MIC Connector: AUDIO1
This Connector is 3 phones Jack for LINE-OUT, LINE-IN, and MIC
Line-out: (GREEN) Audio output to speaker
Line-in: (BLUE) Audio input to sound chip
MIC: (PINK) Microphone Connector
(8) Primary IDE Connector (40-pin block): IDE
This connector connects to the next set of Master and Slave hard disks. Follow
the same procedure described for the primary IDE connector. You may also
configure two hard disks to be both Masters using one ribbon cable on the
primary IDE connector and another ribbon cable on the secondary IDE
connector.
RJ45 LAN
PS/2 Mouse Port
PS/2 Keyboard Port
Line-IN
Line-OUT
MIC-IN
USB Ports
Serial Port VGA Port

9
zTwo hard disks can be connected to each connector. The first HDD is
referred to as the “Master” and the second HDD is referred to as the “Slave”.
zFor performance issues, we strongly suggest you don’t install a CD-ROM or
DVD-ROM drive on the same IDE channel as a hard disk. Otherwise, the
system performance on this channel may drop.
IDE Connector
Pin 1
IDE1
(9) Serial-ATA Port connector: SATA1 / SATA2
These connectors support the provided Serial ATA and Serial ATA2 IDE hard disk
cable to connecting the motherboard and serial ATA hard disk.
Serial-ATA1 & 2 Compatible Connectors
SATA2
SATA1
(10) Serial COM Port: COM1
COM1 is the 9-pin connector. The On-board serial port can be disabled through
BIOS SETUP.
(11) VGA Connector (15-pin D-Sub) Connector: VGA
VGA is the 15-pin D-Subminiature female connector for display monitor.
3-2 Headers
(1) Line-Out/MIC Header for Front Panel (9-pin): AUDIO1
This header is connected to Front Panel Line-out, MIC connector with cable.
Line-Out, MIC Headers
AUDIO
Pin 1
Lineout2-L Lineout2-R
Sense-FB
Audio-GND
LINE2-JD
Audio-JD
2
9
10
KEY
MIC2-L
MIC2-JD
MIC2-R

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(2) USB Port Headers (9-pin) : USB2
This USB header is used for connecting the additional USB port plug. By
attaching an option USB cable, your can be provided with two additional USB
plugs affixed to the back panel.
USB Port Header
Pin1
USB2
VCC
-DATA
GND
+DATA
VCC
OC
-DATA
GND
+DATA
(3) Speaker connector: SPEAK
This 4-pin connector connects to the case-mounted speaker. See the figure
below.
(4) Power LED: PWR LED
The Power LED is light on while the system power is on. Connect the Power
LED from the system case to this pin.
(5) IDE Activity LED: HD LED
This connector connects to the hard disk activity indicator light on the case.
(6) Reset switch lead: RESET
This 2-pin connector connects to the case-mounted reset switch for rebooting
your computer without having to turn off your power switch. This is a preferred
method of rebooting in order to prolong the lift of the system’s power supply.
See the figure below.
(7)Power switch: PWR BTN
This 2-pin connector connects to the case-mounted power switch to power
ON/OFF the system.
System Case Connections
HDLED
RESET
VCC5
GND
VCC5 PWRLED
PWRBTN
PWRBTN PWRLED
HDDLE
RSTS W
NC GND
JW FP
Pin 1
SPEAK
SPKR
GND
NC
VCC5
Pin1
PWRLED
Pin1
(8) FAN Power Headers: SYSFAN1(3-pin), CPUFAN (4-pin)
These connectors support cooling fans of 350mA (4.2 Watts) or less, depending on
the fan manufacturer, the wire and plug may be different. The red wire should be

11
positive, while the black should be ground. Connect the fan’s plug to the board taking
into consideration the polarity of connector.
SYSFAN1
3
1
1
4
CPUFAN GND
+12V
CPUFANIN
CPUFAN OUT
(11) SPDIF Out header: SPDIF 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.
HDMI_SPDIF Header
1
GND
2
HDMI_SPDIF_OUT
3-3 Jumper Setting
(1) Keyboard/Mouse Power-on Enabled/Disabled: JP1
Keyboard/Mouse Power On Setting
2-3 Closed KB/MS Power ON Enabled
JP1
JP1
1-2 Closed KB/MSPower ON Disable (Default)

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(2) USB Power-on Enabled/Disabled: JP2
USB Power On Setting
2-3 Closed: USB Power On Enabled
JP2
JP2
1-2 Closed: USB Power On Disable (Default)
(3) CMOS RAM Clear (2-pin): JBAT
A battery must be used to retain the motherboard configuration in CMOS RAM
short 1-2 pins of JBAT to clear the CMOS data.
WARNNING：Please remove or turn off the power supply before CMOS clear!
To clear the CMOS, follow the procedure below:
1. Turn off the system and unplug the AC power
2. Remove ATX power cable from ATX power connector
3. Locate JBAT and short pins 1-2 for a few seconds, if shorted with the jump cap,
short for a few seconds then pull out the hat.
4. Connect ATX power cable back to ATX power connector
Note: When should clear CMOS
1. Troubleshooting
2. Forget password
3. After over clocking system boot fail
CMOS Clear Setting
1-2 Short：CMOS Clear
JBAT
1-2 Open：Normal

13
Chapter 4
UsefulHelp
4-1 How to Update BIOS
Step 1. Prepare a bootable disc. (You may make one by click START click RUN type
SYS A: click OK)
Step 2. Download upgrade tools and the latest BIOS files of the motherboard from
official website and then make a copy of it to your bootable disk after
decompressing these files
Step 3. Insert the disk into A: start your computer and then type in
“A:\xxxxxx.BAT”(xxxxxxx being the file name of the latest BIOS )
Step 4. Type Enter to update and flash the BIOS. The system will restart
automatically when BIOS is upgraded.
4-2 Trouble Shooting
Problem Solution
No power to the system to the all power light
don’t illuminate, fan inside power supply
doesn’t turn on.
1. Make sure power cable is security
plugged in. 2. Replace cable. 3. Contact
technical support.
System inoperative. Keyboard lights are on ,
power indicator lights are lit, and hard drive
is spinning.
Using ever pressure on both ends of the
DIMM , press down firmly until the module
snaps into places.
System doesn’t boot from hard disk drive,
can be booted from optical drive. 1. Check cable running from disk to disk controller board. .Make sure both ends are
securely plugged in, check the drive type in
the standard CMOS setup. 2. Backing up the
hard drive is extremely important .All hard
disks are capable of breaking down at any
time.
System only boots from optical drive .Hard
disk can be read and applications can be
used but booting from hard disk is
impossible.
1. Back up date and applications files. 2.
Reformat the hard drive. Reinstall
applications and date using backup disks.
Screen message says “Invalid
Configuration” or “CMOS Failure” Review system ‘s equipment .Make sure correct information on is in setup.
Can not boot system after installing second
hard drive. 1. Set master /slave jumpers correctly. 2. Run SETUP program and select correct
drive types. Call the drive manufacture for
compatibility with other drives.