An electrical connector is used to mate with a first plug connector and a second plug connector, the first and second plug connectors have different mating interfaces. The electrical connector includes a housing, defining a mating tongue, a plurality of signal terminals with contacting portion arranged on the mating tongue, and a metallic shell surrounding the mating tongue, thereby defining a mating cavity into which the mating tongue extends. The housing defines a pair of extending posts extending into the mating cavity and located at two opposite sides of the mating tongue and spaced from the mating tongue with a gap. The extending posts are loaded with a pair of power terminals thereon. The mating cavity constructs a first mating port and the extending posts excluding the extending posts and two subsidiary ports into which the pair of extending posts extend.