The above motherboard layout is provided for reference only;
please refer to the physical motherboard.
IR Connector
System FAN Connector
478-pin CPU Socket
North Bridge: Intel
845GV Chipset
CPU FAN Connector
184-pin DIMM Slots
ATX Power Connector
®
P/N: 91-181-U45-M0-00
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Rear Panel
10Mb/100Mb
7
LAN Connector
USB 2.0 Port x4
PS/2 Mouse
1
Connector
PS/2 Keyboard
2
Connector
3
Serial Port
(COM1)
1
PS/2 Mouse Connector
Parallel Port
4
(Printer Port)
VGA
5
Connector
6
This green 6-pin connector is for a PS/2 mouse.
2
PS/2 Keyboard Connector
This purple 6-pin connector is for a PS/2 keyboard.
3
Serial Port (COM1)
This 9-pin COM1 port is for pointing devices or other serial devices.
Line-in jack
Line-out jack
Microphone
jack
8
4
Parallel Port (Printer Port)
This 25-pin port connects a parallel printer, a scanner, or other devices.
5
VGA Connector
The VGA connector is for output to a VGA-compatible device.
6
USB 2.0 Ports
These four Universal Serial Bus (USB) ports are available for connecting USB
2.0 devices.
7
LAN Connector
This port allows connection to a Local Area Network (LAN) through a network
hub.
8
Line-in jack, Line-out jack, Microphone jack
When using a two-channel sound source, the Line-out jack is used to connect to
speakers or headphones; the Line-in port connects to an external CD player,
tape player or other audio device. The Microphone jack is used to connect to the
microphone.
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Accessory Checklist
845GV4MR-ES Motherboard (x1)
Foxconn Utility CD (x1) (optional)
This motherboard uses the CMOS RAM to store all the parameters.The CMOS
can be cleared by resetting the CMOS jumper.
How to clear CMOS?
1. Turn off the AC power supply and connect pin 1 and 2 together using the
jumper cap.
2. Return the jumper setting to normal (pin 2 and 3 together with the jumper cap).
3. Turn the AC power supply back on.
11
Clear
CMOS
Normal Status
(Default)
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2. BIOS-Protection Jumper: BIOS_WP
The motherboard BIOS is inside the FWH. If the jumper BIOS_WP set as Close,
the system BIOS is protected from being attacked by a serious virus, such as the
CIH virus. You will be unable to flash the BIOS to the motherboard when the
system BIOS is protected.
Open
Disabled Protection
Close
Enabled Protection
(Default)
1
2
1
2
BIOS_WP
3. CPU Selection Jumper: JP2
The default status for JP2 is Open, which supports the Prescott and Northwood
CPU. If JP2 set as Close, then it supports the Willamette CPU.
Open
(Default)
Close
2
1
2
1
JP2
4
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4. USB Power Selection Jumper: JP3, JP4, JP5
The motherboard uses JP3, JP4, JP5 jumper to select USB power. JP3 is for USB,
JP4 is for NIC_USB, JP5 is for Front USB (F_USB1). Pin 1 and 2 together (default)
select +5V_SYS power, which not supports USB device wake up function. Pin 2
and 3 together select +5V_SB, which supports USB device wake up function.
11
for
+5V_SYS
(Default)
+5V_SYS
(Default)
+5V_SYS
(Default)
+5V_SB
JP4
11
+5V_SB
JP3
11
+5V_SB
JP5
NIC_USB
for
USB
for
F_USB1
5
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5. Fan Connectors: FAN1, CPU_FAN
The fan speed of FAN1 and CPU_FAN can be detected and viewed in ‘‘PC Health
Status’’ section of the CMOS Setup. These fans will be automatically turned off
after the system enters S4 and S5 mode.
1
1
GND
+12V
SENSE
+12V
SENSEGND
FAN1
CPU_FAN
6. USB 2.0 Header: F_USB1
Besides four USB ports on the rear panel, the series of motherboard also have
one 10-pin header on board which may connect to front panel USB cable (optional)
to provide two additional USB ports.
1 2
VCC
D0-
D0+
GND
Empty
9 10
F_USB1
VCC
D1 D1+
GND
NC
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7. Front Panel Connector: FP1
Attach the power LED, IDE LED, reset switch and power switch connectors to the
corresponding pins.
1
2
IDE-LED+
IDE-LED-
GND
RESET
NC
FP1
PLED+
PLED-
PWRBTN#
GND
EMPTY
109
8. CD_IN Connector: CD_IN
CD_IN is Sony standard CD audio connector, it can be connected to a CD-ROM
drive through a CD audio cable.
1
CD_R
GND
CD_L
CD_IN
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9. Front Audio Connector: F_AUDIO
The audio interface provides two kinds of audio output choices: the Front Audio,
the Rear Audio. Their priority is sequency from high to low(Front Audio to Rear
Audio). If headphones are plugged into the front panel of the chassis(using the
Front Audio), then the Line-out (the Rear Audio) on the rear panel will not work. If
you do not want to use the Front Audio, pin 5 and pin 6, pin 9 and pin 10 must be
SHORT, and then the signal will be sent to the rear audio port.
1
MIC_IN
MIC_VCC
R_OUT
NC
L_OUT
2
AGND
A5V
FR_OUT
Empty
FL_OUT
910
F_AUDIO
10. IrDA Header: IR
The connector supports wireless transmitting and receiving device. Before using
this function, configure the settings of IR Mode from the “Integrated Peripherals”
section of the CMOS Setup.
Empty
GND
+5V
IRRX IRTX
1
IR
8
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11. COM2 Connector: COM2
This motherboard attached a serial connector for your computer, you only need
connect it with cable, then link devices to cable port.
CTS#
DTR#
DSR# Empty
RXD
2
1
DCD#
GND
TXD RTS#
COM2
10
9
RI#
12. 5.1 Channel Audio Effects
The motherboard is equipped with the Realtek ALC655 chip, which provides support for 6-channel audio output, including 2 front, 2 rear, 1 center and 1 subwoofer
channel. ALC655 allows the board to attach 4 or 6 speakers for a better surround
sound effect. To apply this function, you have to install the audio driver in utility CD
as well as an audio application supporting 5.1 Channel. Picture bellow represents the standard location of all speakers in 5.1 Channel sound track. Connect
the front speaker to the green audio output; connect the surround sound speaker
to the blue audio input; connect the center speaker/subwoofer to the red Microphone input.
Blue
Green
Red
Rear Left
Center
Front
Left
Front
Right
Rear Right
Subwoofer
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13. Power on and Load Optimized Defaults
After you finish the setting of jumpers and connect correct cables. Power on and
enter the BIOS Setup, Press <Del> during POST (Power On Self Test). Choose
“Load Optimized Defaults” for recommended optimal performance. Please ensure your system components are good enough for optimized defaults.
Select this option
and press <Enter>.
14. Foxconn Utility CD
This motherboard comes with one Utility CD. To begin using the CD, simply insert
the CD into your CD-ROM drive. The CD will automatically display the main menu
screen. After selecting Install Driver, you can install its Chipset Software, IAA,
DirectX 9.0, VGA Driver, USB 2.0 Driver, Audio Driver, LAN Driver from this CD.
Follow the screen
order to install the
motherboard
drivers.
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