formed on the corners of the card connector 1 the card connector is installed into the electric device by a method such as a screw via these legs 9 in the case of supporting the pc card c in card connector 1 the pc card c is inserted into the space 21 from the other end side of the card connector 1 thereby the pins of the connection unit 3 are respectively inserted into the holes not shown formed on the distal end of the pc card c and these pins are connected to the pc card c at the same time the card bus shield comes in contact with the surface of the pc card c and as a result the pc card c is connected to the electrical device via pins and the terminals 32 extending from the card bus shield 31 the holes 33 a in the board 33 and the contact points in addition when the pc card c is inserted into the space 21 the pc card c is supported in the space 21 by the aforementioned release mechanism furthermore along with supporting the pc card c in the card connector 1 the eject plate 42 presses on.