Intel PentiumD 950 HH80553PG0964M User Manual

98

The power header on the baseboard must be positioned to allow the fan heatsink power 

cable to reach it. The power header identification and location should be documented in 

the platform documentation, or on the system board itself. 

 shows the 

location of the fan power connector relative to the processor socket. The baseboard 

power header should be positioned within 4.33 inches from the center of the processor 

socket.

NOTES:
1.

Baseboard should pull this pin up to 5 V with a resistor.

2.

Open Drain Type, Pulse Width Modulated.

3.

Fan will have a pull-up resistor to 4.75 V, maximum is 5.25 V.

+12V: 12 volt fan power supply

10.2

12

13.8

V

-

IC: 
Peak Fan current draw
Fan start-up current draw     
Fan start-up current draw maximum duration

—
—
—

1.1

—
—

1.5
2.2
1.0

A
A

Second

-

SENSE: SENSE frequency

—

2

—

pulses per 

fan 

revolution

1

CONTROL

21

25

28

kHz

2,3

Pin

Signal

1 2 3 4

1

2

3

4

GND

+12 V

SENSE
CONTROL

Straight square pin, 4-pin terminal housing with
polarizing ribs and friction locking ramp.

0.100" pitch, 0.025" square pin width.

Match with straight pin, friction lock header on
mainboard.