Connector and socket thereof

The utility model relates to a connector which can be applicable to different transportation protocols and a plug thereof. The connector is formed by a plastic jetting an integrated hollow shell body; terminal groups are respectively linked with the upper and the lower faces inside the hollow shell body which is a connecting shell body with fool-proof function; the left and the right of the hollow shell body are respectively provided with a fool-proof projection the outside of which is covered with a shielding shell body, and the upper and the lower ends of the shielding shell body are respectively provided with a spring plate; the plug is a hollow shell body provided with a slot in which a permanent seat is fixed, and the outside of the hollow shell body is covered with another shielding shell body. The connector is characterized in that the upper and the lower faces of the permanent seat are respectively provided with the terminal groups, thereby realizing that the single connector and the plug thereof can