
3.5"-SBC-VR1000 - User Guide, Rev. 1.7
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7.2.
Fan Wafer (FAN1)
The 1x4-pin 2.54 mm pitch CPU fan wafer (FAN1) is used for the connection of the fan for the processor.
Figure 14: Fan Wafer FAN1
Table 20: Pin Assignment FAN1
Pin
Signal
Description
Note
1
GND
Power supply ground signal
2
+12V
+12 V power supply for fan
1 A max.
3
SENSE
Sense input signal from the fan, for rotation speed supervision
RPM (Rotations Per Minute).
4
PWM
PWM output signal for FAN speed control
Connector Type
B2W, 1x4-pin, 2.54 mm pitch
1
4