S&T Kontron 3.5"-SBC-WLU, User Manual, Page: 34 / 90

3.5"-SBC-WLU - User Guide, Rev. 1.8
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7.2. Fan Wafer (CN3)
The 1x4-pin 2.54 mm pitch system fan wafer (CN3) is used for the connection of the fan for the processor or system.
Figure 12: Fan Wafer CN3
Table 18: Pin Assignment CN3
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