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For the backplanes with ATX power supply connector
For some SBC without ATX power ON/OFF function, you can control the ATX power
supply through backplane’s PS ON connector. Please refer to the figure below:
For the backplanes with ATX connector, simply doing the following can make the
connection:
1. Connect the ON/OFF (ordinary one) switch to Pin 2 (PS ON) and Pin 3 (GND) of
connector CN2
You may now turn the power ON/OFF by the power switch