Zwischensockel für Karte

A card connecting adapter (100) for connecting, to a card slot (202) of one standard, a card (110) of another standard. The adapter (100) has a first connecting portion (1) corresponding to the card slot (202), a second connecting portion (2) corresponding to the card (110), a plurality of terminals (20) for electrical connection to the card (110), a shutter mechanism (7, 59, 60, 73, 74), and a locking mechanism (91, 92). The shutter mechanism (7, 59, 60, 73, 74) has a shutter member (7) displaceable between a protecting position where the terminals (20) are protected from the exterior and a connecting position where the terminals (20) are exposed, and an interlocking mechanism (59, 60, 73, 74) for displacing the shutter member (7) in synchronization with operations for mounting/removing the card (110) on/from the second connecting portion (2). The locking mechanism (91, 92) allows the displacement of the shutter member (7) when mounting the card (110), while inhibiting the displacement of the shutter member (7) when removing the card (110).