An electronic device may include: a socket; a tray detachably received in the socket; a receiving space formed in the tray; and a mounting section formed in the receiving space, wherein the receiving space is configured to receive a storage medium having one or more connection pads formed on a first side thereof, and the mounting section is configured disposed to face a second side of the storage medium when the storage medium is received with the receiving space, the first side being opposite to the second side.