ROCKY-4786EV/EVG User Manual
Page 27
3.2.6 Cooling Fan Connector
CN Label: FAN1, FAN2
CN Type: 1x3 pin header
CN Location: See
Figure 3-7
CN Pinouts: See
Table 3-8
The FAN1 and FAN2 cooling fan connectors provide a 12V, 350mA ~ 740mA or 1A ~ 2.2A
current to the cooling fans. Each 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 certain fans can issue the rotation signals.
PIN
DESCRIPTION
1 GND
2 +12V
3 Sense Pulse
Table 3-8 Cooling Fan Connector Pinouts
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