An electrical connector includes an insulative housing (1) having a chamber (101, 1121); a set of contacts (2, 23) retained in the insulative housing, and having contacting portions (21, 31) exposed to the chamber and tail portions (23, 34), the contacts including a second grounding contact (351) and a third grounding contact (355) perpendicular to the second grounding contact; an electrical means (5) electrically connecting the second grounding contact and the third grounding contact; and a metal shell (4) enclosing the insulative housing (1).