An electrical connector includes: a shielding shell; an insulative housing received in the shielding shell, the insulative housing having two rows of mating ports in a vertical direction and a receiving slot between the two rows of mating ports; a contact module mounted in the insulative housing, the contact modules comprising an inner circuit board and a plurality of mating contacts mounted on an upper surface and a lower surface of the inner circuit board, the inner circuit board comprising a conductive area at a front end thereof; and a conductive foam received in the receiving slot and compressed between the conductive area of the inner circuit board and the shielding shell.