According to one embodiment, an electronic device includes a receptacle, a first port, a second port, and a switch circuit. The receptacle includes pins. The pins of the receptacle are connectable to pins of a plug respectively. Each of the first and second ports communicates with the receptacle. The switch circuit switches a signal flow between the receptacle, and the first port and second port when the plug is inserted into the receptacle. The switch circuit communicates a first signal between the first port and one of a pair of first and second pins of the receptacle and a pair of third and fourth pins of the receptacle, and communicates a second signal between the second port and the other of the pair of the first and second pins and the pair of the third and fourth pins.