IEI Integration IMBA-Q770 - Manual (Page 38)

IMBA-Q770 ATX Motherboard
Page 23
Figure 3-7: CPU Fan Connector Location
Pin Description
1 GND
2 +12 V
3 FANIO1
4 PWM
Table 3-7: CPU Fan Connector Pinouts
3.2.7 Fan Connectors (System)
CN Label: CPU_FAN2, SYS_FAN2
CN Type: 3-pin wafer
CN Location: See Figure 3-8
CN Pinouts: See Table 3-8
Each fan connector attaches to a cooling fan.