IEI Integration SPCIE-5100DX - Manual (Page 37)

SPCIE-5100DX PICMG 1.3 CPU Card
Page 23
3.2.3 Cooling Fan Connector (Northbridge)
CN Label:
MCH_FAN1
CN Type:
4-pin header (1x4)
CN Location:
See Figure 3-4
CN Pinouts:
See Table 3-5
The cooling fan connector provides a 12V, 500mA current to a northbridge 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.
Figure 3-4: +12V Fan Connector Location
PIN NO. DESCRIPTION
1 Ground
2 +12V
3 Rotation Signal
4 NC
Table 3-5: Northbridge Fan Connector Pinouts