IEI Integration ROCKY-3786 v4.0 - Manual (Page 47)

0-47
ROCKY-3786EV CPU Card
47
Figure 3-7: CFII Socket Location
3.2.7 CPU Fan Connector
CN Label: FAN2 and FAN3
CN Type: 3-pin header
CN Location: See Figure 3-8
CN Pinouts: See Table 3-10
The CPU fan connector provides a 12V/500mA to the cooling fan. The connector has a
"rotation" pin to get rotation signals from the fan and notify the system so the system BIOS
can recognize the fan speed. Please note that only certain fans can issue the rotation
signals.
PIN NO. DESCRIPTION
1 GND
2 +12V
3 Sensor
Table 3-10 CPU Fan Connector Pinouts