Electrical connector with a mating portion defined by a metallic shell

In an electrical connector to be surface-mounted on a printed circuit board, which comprises an insulator body, a plurality of contacts fixed to the insulator body, and a metallic shell fitted on the insulator body, the contacts having contact portions in a mating hole for receiving a mating plug connector, the insulator body is formed with a pair of pillars extending in parallel with the contacts for supporting the metallic shell. The mating hole is defined by the metallic shell supported by the pillars so that the contacts are enclosed directly by the metallic shell without insulator walls therebetween.