The present invention provides an electrical connector (100) including a magnetic module (200) for noise-filtering. The magnetic module (200) includes an interior printed circuit board (21), a common mode choke and a number of transformers mounted on the interior printed circuit board (21). Each of said common mode choke and transformers has a magnetic core (20,22) and a number of magnetic wires (23) winding around the magnetic cores (20,22), wherein the magnetic core (20) of the common mode choke defines two holes (203,205) parallel extending therethrough and forms a center wall (201) therebetween. The magnetic wires (23) of the common mode choke wind around the center wall (201) and through said two holes (203,205) in a same direction.