An electrical connector includes a receptacle connector (1) comprising an insulating housing (30) containing a plurality of contacts (40) and a shielding shell (20) disposed so as to enclose the contact portions (41) of the contacts (40) and a plug connector (2) including a second insulating housing containing a plurality of contacts and a second shielding shell (60) disposed so as to enclose contact portions of the second contacts. A mounting frame (10) for mounting the shielding shell (20) on an object defines with the shielding shell (20) a circumferential channel (12) into which a front end of the second shielding shell (60) is to be fitted. The insulating housing (30) has a front contact enclosure (31) to enclose the contact portions (41) of the contacts (40) and the shielding shell (20) has a front enclosure (21) into which the front contact enclosure (31) is fitted. The mounting frame (10) has a central opening (12) for receiving the front enclosure (21) and a stepped edge (12 min ) around the central opening so as to define with the shielding shell (20) the circumferential channel (12) into which the front end of the second shielding shell (60) is to be fitted to make electrical connections between the shielding shells (20, 60).
