An electrical connector includes an insulative housing, a contact module inserted into the insulative housing, a metal shell locked to the insulative housing, a number of cables and an outer shell over-molding the metal shell and the cables. The contact module includes an insulative block and a number of contacts embedded in the insulative block. The contacts include a plurality of cantilevered contacting portions extending beyond the insulative block and a plurality of soldering pads exposed on the insulative block. The cantilevered contacting portions of all the contacts overlap each other from a side view, while the soldering pads of all the contacts are alternately arranged in two parallel planes, respectively, from the side view.