Abstract: A power supply system is disclosed to include a fuel cell, and a base member, which has a receptacle type connection interface for receiving the fuel cell, a plurality of powered USB connectors for receiving different electronic apparatus and providing different voltages to the connected electronic apparatus, and a powered USB hub electrically connected between the connection interface and the powered USB connectors for controlling supply of different voltages from the fuel cell to the powered USB connectors and transmission of signal among the electronic apparatus being respectively connected to the powered USB connectors.

Abstract: A power switching module of the present invention comprises a plurality of connectors, disposed on a circuit board, for supplying power and transmitting signals, wherein the connectors comprises power sockets and signal sockets; a power adaptor, disposed on the circuit board, electrically connected to the power sockets of said connectors; and a signal adaptor, disposed on the circuit board, electrically connected to the signal sockets of said connectors. Thus, the motherboard set the single set of the signal plug will not occupy the space and therefore adequate space is available for installing electronic components over the motherboard.