Intel PMH55 user manual Speaker connector Speak, Power LED PWR LED, IDE Activity LED HD LED

(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.

PWRLED

Pin 1

SPEAK

Pin 1

VCC5

GND

NC

SPKR

JW FP

Pin 1

PWR LED			PWRBTN
VCC5	PWRLED	PWRBTN	GND
VCC5	HDDLE	GND	RSTSW NC

HDLED

RESET

System Case Connections

(8) FAN Headers: SYSFAN1, SYSFAN2 (3-pin), CPUFAN1 (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 positive, while the black should be ground. Please connect the fan’s plug to the board taking into consideration the polarity of connector.

CPUFAN1

1

SYSFAN2

SYSFAN1

4

3

1

3

1

19