An electrical connector includes an insulative housing, a number of first contacts and second contacts, an insulator inset-molded with the first contacts, a metallic shielding plate retained in the insulative housing, and a shielding shell attached to the insulative housing. The housing has a base portion defining a receiving cavity located at a back-end thereof and extending forwardly and a tongue portion extending forwardly from the base portion. The tongue portion defines a first surface carrying the first contacts and a second surface located oppositely and a number of terminal-receiving slots located at the first surface and the second surface and communicated with receiving cavity. The second contacts are inserted into terminal-receiving slots located at the second surface. The insulator is received in the receiving cavity to insert the first contacts into the terminal-receiving slots located at the first surface.
