PURPOSE: To replace only an iC memory card connector by employing adapter structure for the iC memory card connector.

CONSTITUTION: The iC memory card connector 2 has the adapter structure. namely, the adapter structure consists of an adapter substrate 3, an ic memory card connected 2 provided on one surface of this substrate, and an adapter connector 4 provided on the other surface, and a main-body side connector 10 provided to a main body printed board 30. An adapter 11 is fixed to a main boy printed board 30 by connecting the connectors 4 and 10, an iC memory card 36 is mounted on the iC memory card connector 2, and the iC memory card 36 is connected to the main body printed board 30 through the adapter. When a terminal of the iC memory card connector 2 wears away, the iC memory card 36 is disconnected from the connector 2 and the adapter part is replaced. Consequently, only the iC memory card connector 2 which wears away is replaced.