According to one embodiment, an electronic apparatus is configured to be provided with a communication line socket provided on a backside surface of a casing of the electronic apparatus, metallic terminals provided in the communication line socket, and abutment sections each of which is provided in the vicinity of the communication line socket, and is given a predetermined height from the metallic terminals in an insertion direction of the communication line socket. By virtue of the above configuration, even if it is tried to insert a wrong plug into the communication line socket by mistake, the wrong plug abuts against the abutment sections, and the insertion is stopped on the way.