An electrical connector comprises an insulative housing, a metallic shell surround the insulative housing, a plurality of contacts and two detect modules retained to the metallic shell. The insulative housing is formed with a base and a tongue extending forwardly from the base. The shell and the insulative housing define a receiving cavity therebetween. The detect module have a detect pin, respectively, the detect pins extend into the receiving cavity through the shell and electrically connecting with each other via a shell of a mating plug.