Pegatron IPM31 Manual

IPM31

Motherboard layout reference

Contents

• Specications summary

• Motherboard layout

• Rear panel connectors

• Function selectors

• Internal connectors

2

IPM31 motherboard layout reference

Specications 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

Form factor

Expansion
slots

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

Realtek ALC662 CODEC (6 Channels)

microATX: 9.6 in. x 8.0 in.

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

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

Power
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

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

3

IPM31 motherboard layout reference

Motherboard layout

Intel

LGA775

CPU Socket

PCIE1
Connector

PCIE16
Connector

PCI Connectors

Front Panel

A

udio Connector

Keyboard &
Mouse
Connectors

USB
Connectors

LAN & USB
Connectors

A

udio

Connectors

Display (VGA)
port Connector

Printer (parallel)
port Connector

Serial Port
Connector

Memory
Socket

CPU Fan
Connector

ChassisFan
Connector

AT X CPU Power

Connector

Keyboard Power
Selector

Internal Serial
port Connector

EATX Power
Connector

SATA
Connectors

Front Panel
Connector

Floppy
Connector

Primary IDE
Connector

Onboard

Buzzer

Clear RTC
RAM

USB
Connector

USB
Connector

USB Power
Selector

Internal SPDIF
Connectors

CD Audio
Connector

SPDIF_OUT

CD

AAFP

USBPW

BUZZER

USB78

USB56

CLRTC

F_PANEL

SATA

1 3 2 4

PCI Slot1

PCI Slot2

PCIE-X16

North Bridge

BATTERY

KB • MS

DIMM_A1

DIMM_B1

CHASSIS_FAN

LAN •USB

AT X12V

AUDIO

CPU_FAN

EATXPWR

FLOPPY

COM

KBPWR

COM

VGA

PARALLEL PORT

USB

PCIE-X1 Slot1

Internal TPM
Connector

TPM

South Bridge

Rear panel connectors

Mouse (PS/2) port

Keyboard (PS/2) port

Serial (COM) port

Printer (parallel) port

Display (VGA ) port

LAN (RJ-45) port

USB 2.0
ports 1&2

USB 2.0
ports 3&4

Black: Rear Speaker Out

Orange: Center/Subwoofer Out

Blue: Line In

Green: Front-L/R out

Pink: Mic In

Gray: Side Speaker Out

4

IPM31 motherboard layout reference

LAN port LED indicators

USBPW

(Default)

+5V+5VSB

3

2

1

3

2

1

1

3

2

+5V +5VSB

(Default)

1

3

2

KBPWR

1

3

2

1

3

2

(Default) Clear RTC

Clear CMOS

Left (SPEED)

Orange: 100M Activity
Off : 10M Link

Function Selectors

USB POWER SELECTOR

LAN port

USBPW

Right (ACTIVITY)

Green : 1Gbit Link
Orange: 100M Link
Off : 10M Link

KBPWR

KEYBOARD POWER SELECTOR

Clear CMOS

CLEAR RTC RAM SELECTOR

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.

5

IPM31 motherboard layout reference

Internal connectors

EATX PWR

+3 Volts

Power OK

Ground

Ground

Ground

Ground

Ground

Ground

Ground

Ground
PSON#

+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

A T X12V

+12V DC

Ground

Ground

+12V DC

CPU_FAN

Ground

+12V

FAN_TACH

FAN_PWM

Ground

SPDIF out

+5V

Ground

Ground

Ground

SATA_RX(+)
SATA_RX(-)

SATA_TX(-)
SATA_TX(+)

USB*(-)

USB*(+)

USB*(+)

USB*(-)

Ground

Ground

SBV

SBV

NC

MIC*_L

MIC*_R

Ground

Ground

LINE*_L

LINE*_JD

MIC*_JD

AUDIO_PRES#

AAFP

CHASSIS_FAN

Ground

+12V

FAN_TACH

FAN_PWM

PRIMARY_IDE

EATX PWR

ATX12V

ATX 12V POWER CONNECTOR

CPU FAN CONNECTOR

SATA CONNECTORS

CPU_FAN

S ATA

EATX POWER CONNECTOR

CHASSIS_FAN

CHASSIS FAN CONNECTOR

PRIMARY_IDE

PRIMARY IDE CONNECTOR

FLOPPY CONNECTOR

FRONT PANEL AUDIO CONNECTOR

FLOPPY

SPDIF AUDIO OUT CONNECTOR

AAFP

USB CONNECTORS

SPDIF_OUT

USB78

USB56

Internal connectors (cont’d)

TPM

Clock signal

Ground

Ground

Ground
Ground

Reset signal

Data signal

Data signal
Data signal

Data signal

+3.3V

+3.3V standby

no used

no used

no used

no used

LFRAME# signal

command signal
command signal

DDC*#

TTXD*

Ground

RRTS*#

RRXD*

DDTR*#

DDSR*#

CCTS*#

RRT*#

F_PA NEL

Ground

Ground

(+)5V

HD_LED#

+HDLED

RESET

FP_LED(+)

FP_LED(-)

FP_PWRBTN#

SYS_Reset#

NC

PWRBTN

PLED

INTERNAL SERIAL PORT CONNECTOR

FRONT PANEL CONNECTOR

SERIAL_A

F_PANEL

TPM

INTERNAL TPM CONNECTOR

6

IPM31 motherboard layout reference