IEI Integration IMB-G41A - Manual (Page 39)

IMB-G41A Micro-ATX Motherboard
Page 27
3.2.10 Northbridge Fan Connector
CN Label: NB_FAN1
CN Type: 3-pin header
CN Location: See Figure 3-21
CN Pinouts: See Table 3-20
The Northbridge fan connector attaches to a Northbridge cooling fan.
Figure 3-11: Northbridge Fan Connector Location
Pin Description
1 Fan Speed Detect
2 +12 V
3 GND
Table 3-11: Northbridge Fan Connector Pinouts