A docking station includes a multiplexer. The multiplexer includes a first input end, a second input end, and an encode system. The encode system is connected to the second input end, and configured to generate an encoding according to a connection status of the second input end. The encode system is configured to generate a first encoding, when a first peripheral device is connected to the second input end, to switch the multiplexer to a first state, in which the second input end is on and the first input end is off. The encode system is further configured to generate a second encoding, when the first peripheral device is not connected to the second input end, to switch the multiplexer to a second state, in which the second input end is off and the first input end is on.