IEI Integration IMB-Q354 v1.20 - Manual (Page 35)

IMB-Q354 microATX Motherboard
Page 21
Figure 3-5: +12V Fan Connector Location
PIN NO. DESCRIPTION
1 GND
2 +12VCC
3 Rotation Signal
4 Control
Table 3-6: +12V Fan Connector Pinouts
3.2.5 Fan Connector, System (+12V, 3-pin)
CN Label: SYS_FAN1
CN Type: 3-pin wafer (1x3)
CN Location: See Figure 3-6
CN Pinouts: See Table 3-7
The system cooling fan connector provides a 12V, 500mA current to a system cooling fan.
The connector has a "rotation" pin to get rotation signals from fans and notify the system
so the system BIOS can recognize the fan speed. Please note that only specified fans can
issue the rotation signals.