An electrical connector assembly includes an insulative housing, a plurality of terminals retained in the housing, and a metallic shielding plate embedded within the housing. The insulative housing includes a base and a tongue portion extending forwardly from the base. The tongue portion includes a mating section and a rear step section. There are two rows of terminals. The shielding plate is disposed between the two rows of terminals. The terminals include a pair of outermost grounding terminals in a transverse direction. A grounding plate positioned upon the rear step section, is mechanically and electrically connected to at least one of the corresponding grounding terminal and the shielding plate wherein the corresponding grounding terminal and the shielding plate have corresponding extension soldered to the grounding plate.