Abstract: A power supply device includes a power supply unit, a switch unit, a discharge unit and a control unit. The power supply unit is for receiving a first power or a second power, for outputting a third power. The switch unit is coupled to the power supply unit, for receiving the first power and the second power and outputting one of them. The discharge unit is coupled to the power supply unit, for performing a discharge to the power supply unit based on a control signal. The control unit controls the switch unit for stopping outputting the first power to the power supply unit. The control unit generates the control signal so the discharge unit performs the discharge to the power supply unit for lowering the voltage of the power supply unit. The control unit controls the switch unit for outputting the second power to the power supply unit.

Abstract: This invention discloses a server computer set, which includes a power cabinet, at least one system cabinet, a first battery backup module and a second battery backup module. The power cabinet provides a high-voltage direct current (DC) power. The system cabinet includes a plurality of system units. The system cabinet shunts the high-voltage DC power to the system units. Each system unit includes a transformer and an internal circuit. The transformer is used for transforming the high-voltage DC power to a low-voltage DC power, which is used for driving the internal circuit. The first battery backup module is coupled between the power cabinet and the at least one system cabinet for providing a backup high-voltage DC power. The second battery backup module is disposed in the system units and coupled between the transformers and the internal circuits for providing a backup low-voltage DC power.

Abstract: A rack server device includes a rack, a plurality of servers, and a plurality of power distribution units (PDU). The servers are configured on the rack. Each of the servers includes a power supply, and the power supply includes a plug. The plug includes a positive pin, a negative pin, a ground pin, and a signal pin, wherein the signal pin is shorter than the positive pin, the negative pin and the ground pin. The PDUs are configured on the rack. Each of the PDUs includes a socket. The socket includes a positive connecting port, a negative connecting port, a ground connecting port, and a signal connecting port. The positive connecting port, the negative connecting port, the ground connecting port, and the signal connecting port are operable to connect to the positive pin, the negative pin, the ground pin, and the signal pin respectively.

Abstract: An industrial computer set is provided and includes a power cabinet and a plurality of system cabinets. The power cabinet includes a power conversion module and a power cable distribution tray. The power conversion module is coupled between mains electricity and the power cable distribution tray. The power conversion module is used for converting a high-voltage AC power into a high-voltage DC power. Each of the system cabinets includes a plurality of system units and a shunt module. The shunt module is coupled between the power cable distribution tray and the system units. The shunt module receives the high-voltage AC power from the power cable distribution tray, and shunts the high-voltage AC power to the system units.