IPM31Motherboard layout reference

Contents

• Specifications summary• Motherboard layout• Rear panel connectors• Function selectors• Internal connectors

2IPM31 motherboard layout reference

Specifications summary

CPU Socket: Intel Socket 775 Supports: Conroe L, Conroe, Wolfdale Front Side Bus: 800/1066/1333MHz

Chipset MCH (North Bridge): Intel G31 ICH (South Bridge): Intel ICH7

Graphic Integrated Graphics in North Bridge, DVI/TV-OUT

Memory Dual channel, 2 slots, Non-ECC, 240-pin DDR2, Un-buffered Types: 667/PC2-5300, 800/PC2-6400

Audio Realtek ALC662 CODEC (6 Channels)

Form factor microATX: 9.6 in. x 8.0 in.

Expansion slots

1x PCI Express Graphic slt (x16) 1x PCI Express slot (x1) 2x PCI slot

LAN Realtek RTL8111C PCIe

1394 (none)

USB 8x USB 2.0 ports (4 onboard headers, 4 on rear panel) 12Mbps/480Mbps

Storage 4x SATA ports (4 onboad headers) SATA300, ATA100

BIOS AMI 4Mb SPI

Rear panel ports

1x PS2 Mouse port + 1x PS2 Keyboard port 1x Parallel (printer) port + 1x Serial (com) port + 1x VGA (display) port 2x USB ports 1x LAN port + 2x USB ports 3x Audio ports

Selectors USB power, Keyboard power, clear RTC,

Onboard connectors

1x Front panel connector 1x Front panel audio connector 1x SPDIF output connectorr 1x Audio (CD) input connector 2x USB 2.0 dual port connectors 1x Serial (COM) port connector 4x SATA connectors 1x Primary IDE connector 1x Internal TPM connector

Power connectors

1x 24-pin EATX (+12V EPS power connector) 1x 4-pin ATX (+12V power connector) 1x CPU FAN connector 1x Chassis FAN connector

1x Front panel audio header 1x System chassis speaker header 1x System chassis intrusion header

3IPM31 motherboard layout reference

Orange: Center/Subwoofer OutBlack: Rear Speaker Out

Pink: Mic In

Blue: Line In

Green: Front-L/R out

Motherboard layout

Rear panel connectors

Gray: Side Speaker Out

Mouse (PS/2) port

Display (VGA ) port

Printer (parallel) port

Keyboard (PS/2) port

LAN (RJ-45) port

Serial (COM) port USB 2.0ports 3&4

USB 2.0 ports 1&2

IntelLGA775

CPU Socket

PCIE1Connector

PCIE16Connector

PCI Connectors

Front PanelAudio Connector

Keyboard &MouseConnectors

USBConnectors

LAN & USBConnectors

AudioConnectors

Display (VGA)port Connector

Printer (parallel)port Connector

Serial PortConnector

MemorySocket

CPU FanConnector

ChassisFanConnector

ATX CPU PowerConnector

Keyboard PowerSelector

Internal Serialport Connector

EATX PowerConnector

SATAConnectors

Front PanelConnector

Floppy Connector

Primary IDEConnector

OnboardBuzzer

Clear RTCRAM

USBConnector

USBConnector

USB PowerSelector

Internal SPDIFConnectors

CD AudioConnector

SPDIF_OUTCDAAFP

USBPW

BUZZERUSB78 USB56

CLRTC

F_PA

NEL

SATA

1 3 2 4

PCI Slot1

PCI Slot2

PCIE-X16

North Bridge

BATTERY

KB • MS

DIM

M_A

1

DIM

M_B

1

CHASSIS_FAN

LAN •USB

ATX12V

AUDIO

CPU_FAN

EA

TXP

WR

FLO

PP

Y

COM

KBPWRC

OM

VG

A

PA

RA

LLE

L P

OR

T

USB

PCIE-X1 Slot1

Internal TPMConnector

TPM

South Bridge

4IPM31 motherboard layout reference

Left (SPEED)Orange: 100M Activity Off : 10M Link

Right (ACTIVITY)Green : 1Gbit LinkOrange: 100M LinkOff : 10M LinkLAN port

LAN port LED indicators

Function Selectors

KEYBOARD POWER SELECTOR USB POWER SELECTOR

CLEAR RTC RAM SELECTOR

USBPW

(Default)+5V +5VSB

321

321

1 32

+5V +5VSB(Default)

1 32

KBPWR

1 32 1 32

(Default) Clear RTC

Clear CMOS

KBPWR

USBPW

Clear CMOS

To erase the CMOS RTC RAM user settings:1. Turn OFF the computer and unplug the power cord.2. Move the cap to clear for 5 to 10 secs, then move cap back to default.3. Plug the power cord and turn ON the computer.4. During the boot process, enter BIOS setup to re-enter user settings.

5IPM31 motherboard layout reference

Internal connectors

CPU FAN CONNECTOR

SATA CONNECTORS

ATX 12V POWER CONNECTOR EATX POWER CONNECTOR

USB CONNECTORSFRONT PANEL AUDIO CONNECTOR

EATX PWR+3 Volts

Power OK

Ground

Ground

Ground

Ground

GroundGroundGround

GroundPSON#

+5 Volts+5 Volts

+5 Volts

5 Volts

12 Volts

+3 Volts

+12 Volts+12 Volts

+5V Standby

+5 Volts

+5 Volts

+3 Volts+3 Volts

SPDIF AUDIO OUT CONNECTORFLOPPY CONNECTOR

ATX12V

+12V DCGround Ground

+12V DC

CPU_FANGround

+12VFAN_TACHFAN_PWM

Gro

und

SP

DIF

out

+5V

Ground

Ground

Ground

SATA_RX(+)SATA_RX(-)

SATA_TX(-)SATA_TX(+)

US

B*(

-)U

SB

*(+)

US

B*(

+)U

SB

*(-)

Gro

und

Gro

und

SB

VS

BV

NC

MIC

*_L

MIC

*_R

LIN

E*_

RG

roun

d

Gro

und

LIN

E*_

LLI

NE

*_JD

MIC

*_JD

AU

DIO

_PR

ES

#

AAFP

FLOPPY

USB78 USB56

ATX12V

SPDIF_OUT

CPU_FAN

EATX PWR

AAFP

SATA

CHASSIS FAN CONNECTOR

CHASSIS_FAN

Gro

und

+12V

FAN

_TA

CH

FAN

_PW

M

CHASSIS_FAN

PRIMARY IDE CONNECTOR

PRIMARY_IDEPRIMARY_IDE

6IPM31 motherboard layout reference

Internal connectors (cont’d)

TPM

Clock signal Ground

Ground

GroundGround

Reset signalData signal Data signal

Data signalData signal

+3.3V

+3.3V standbyno used

no used

no used

no used

LFRAME# signal

command signalcommand signal

INTERNAL TPM CONNECTOR

TPM

INTERNAL SERIAL PORT CONNECTORC

OM

DD

C*#

TTX

D*

Gro

und

RR

TS*#

RR

XD

*D

DTR

*#

DD

SR

*#C

CTS

*#R

RT*

#

SERIAL_A

FRONT PANEL CONNECTOR

F_PANEL

GroundGround

(+)5VHD_LED#

+HDL

EDRE

SET

FP_LED(+)FP_LED(-)

FP_PWRBTN#SYS_Reset#NC

PW

RB

TNP

LED

F_PANEL