Intel E6540 HH80557PJ0534M User Manual

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The boxed processor's Thermal Module Assembly (TMA) requires a +12 V power supply. 

The TMA will include power cable to power the integrated fan and will plug into the 4-

wire fan header on the baseboard. The power cable connector and pinout are shown in 

. Baseboards must provide a compatible power header to support the boxed 

processor. 

contains specifications for the input and output signals at the TMA. 

The TMA outputs a SENSE signal, which is an open-collector output that pulses at a rate 

of 2 pulses per fan revolution. A baseboard pull-up resistor provides V

OH

 to match the 

system board-mounted fan speed monitor requirements, if applicable. Use of the 

SENSE signal is optional. If the SENSE signal is not used, pin 3 of the connector should 

be tied to GND.

The TMA receives a Pulse Width Modulation (PWM) signal from the motherboard from 

the 4

th

 pin of the connector labeled as CONTROL.

The boxed processor’s TMA requires a constant +12 V supplied to pin 2 and does not 

support variable voltage control or 3-pin PWM control. 

The power header on the baseboard must be positioned to allow the TMA 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.

B

d P

P

C bl

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.