J11: keyboard / mouse connector, J12: power on & reset headers, Sw1: digital i/o input pin switch – Intel MB875 User Manual

Page 21: Led1: digital io output led, Led2: hdd / power led, Cn2, cn3, cn4, cn5: lan connectors, Cn6: usb connector

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INSTALLATIONS

J11: Keyboard / Mouse Connector
J11, a 10-pin header connector, has functions for both keyboard and
mouse. The following table shows the pin assignments of this connector.

Signal Name

Pin #

Signal Name

Protect pin

N.C.

KB clock

Mouse clock

KB data

Mouse data

Vcc 7

2 Vcc

Ground 6 1 Ground

J12: Power On & Reset Headers

Pin #

Signal Name

1 PS_ON#
2 Ground

Pin #

Signal Name

3 RESET#
4 Ground

SW1: Digital I/O Input Pin Switch

LED1: Digital IO Output LED

LED2: HDD / Power LED

Red: HDD LED

Green: Power LED

CN2, CN3, CN4, CN5: LAN Connectors
CN2:

LAN1

CN3:

LAN2

CN4:

LAN3

CN5:

LAN4

CN6: USB Connector

MB890 User’s Manual