Method and device of realizing hot plug for power distribution singleboard

The power supply system possesses voltage motherboard. Through connectors, multiple power distribution single boards are plugged to the said motherboard. The method is as follows. Detection unit in distribution single board detects signal of on-position of a distribution single board. The signal of on-position directs that when not on-position, the distribution single board generates signal of turn-off. The signal of turn-off controls the distribution single board to stop outputting voltage. The invention also discloses one kind of distribution single board.