An electrical connector includes an insulating base, a plurality of conductive terminals, a circuit board, at least one connection kit, an outer shell receiving the insulating base, and a shielding plate. The plurality of the conductive terminals are inserted to the insulating base. The circuit board is mounted on the insulating base. At least one portion of one end of the circuit board extends outward to form at least one tongue board. The plurality of the golden fingers are connected with the plurality of the conductive terminals. The at least one connection kit is integrally injection-molded by a metal injection molding technology. The at least one connection kit sleeves around the at least one tongue board. The shielding plate is covered on the circuit board.