A square-shaped body of an insulating material has a plurality of contact housing holes bored therethrough and arranged in a matrix form, and pin contacts are respectively housed in the contact housing holes. Cords of a shielded cable are connected at one end to the rear ends of the pin contacts. A cable clamper is put on and fixed to the shielded cable and the shield of the shielded cable is connected to the inner surface of the cable clamper. The cable clamper is fitted in and fixed to the rear end portion of a tubular shielding member made of metal and the square-shaped body is fitted in and fixed to the front end portion of the shielding member.