Onlogic HX310 Product Manual page 22

Fan Header
The on-board fan header can power and control any five volt three or four-wire fan (including
variable-speed PWM fans) using the standard pin configuration in the chart below. Three-wire fans
will only connect to pins 1-3. This header utilizes a standard 4-pin 2.54mm pitch fan connector with a
small retention tab. Any mating connector with the standard form factor, such as Molex part number
0470541000, can be used to connect a fan. Most CPU and case fans utilize this connector and pinout.
The 5V pin on this connector can provide up to 1A of current.
Fan header pinout
Pin Function
1 GND
2 5V
3 RPM
4 PWM
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