An electronic apparatus of the present invention has a bottom surface on which a first connection terminal is disposed, and a rear surface on which a second connection terminal is disposed. The first connection terminal and the second connection terminal are formed on a common substrate. An edge formed by the bottom surface and the rear surface is formed by the substrate. The electronic apparatus is to be connected to an expansion unit including a first connection-target terminal to which the first connection terminal is to be connected and a second connection-target terminal to which the second connection terminal is to be connected.