Patent ID: 7830044

Claim:
A power switch circuit comprising: a connector configured for connecting to a power supply, the connector comprising a detecting pin, a first group of power pins, and a second group of power pins connected to a first power terminal of a motherboard; a first switch circuit connected between the first group of power pins and each of the first power terminal and a second power terminal of the motherboard; a detecting circuit connected to the detecting pin to obtain a voltage according to a type of the power supply, and connected to the first switch circuit; and a first conversion circuit connected between the detecting circuit and the second power terminal of the motherboard; wherein a first voltage of the power supply is supplied to the first power terminal via the second group of power pins, the detecting circuit controls the first switch circuit and the first conversion circuit according to the voltage obtained from the detecting pin; wherein in response to the power supply is a single-output power supply, the detecting circuit outputs a first control signal to turn the first switch circuit off and turn the first conversion circuit on, the first conversion circuit converts the first voltage from the first power terminal to a second voltage to supply to the second power terminal; wherein in response to the power supply is a multi-output power supply, the detecting circuit outputs a second control signal to turn the first switch circuit on and turn the first conversion circuit off, a second voltage of the power supply is supplied to the second power terminal of the motherboard via the second group of power pins and the first switch circuit.