An electrical connector includes: an insulative housing having a slot; plural contacts secured in the insulative housing and exposed to the slot; and a metallic shell mounted to the insulative housing and having a top plate, a bottom plate, and a connecting part connected to the top plate at an upper end thereof and connected to the bottom plate at a lower end thereof, wherein the top plate has a pair of actuating arms and the connecting part has a pair of locking arms, and the top plate is movable about the upper end of the connecting part to actuate the pair of locking arms by the pair of actuating arms.