An electrical connector, for mating with a mating plug, includes an insulative housing (1), a number of contacts (2) received in the insulative housing (1), a shell (3) mounted to the insulative housing (1) and an elastic element (4) mounted to the receiving space (100). The insulative housing includes a top wall (12), a lower wall (13), two side walls (14) and a receiving space surrounded by the top wall, the lower wall and the two side walls. The shell (3) comprises a pair of elastic arms (342). The elastic element (4) resists against the elastic arm (342) upon inserting a mating plug to move the pair of least arms outward.