An electrical connector includes: an insulative outer cover and a metallic inner shell insert molded with the insulative outer cover, the inner shell having a top wall, a bottom wall, and a pair of side walls; and a terminal module including an insulative housing and an upper and lower rows of contacts arranged in the housing, the insulative housing having a base received by the inner shell and a frontal tongue exposing the upper and lower rows of contacts respectively to two opposite surfaces thereof; wherein the inner shell has a front stop and a rear finger at the top wall respectively engaging a front and rear portions of the base, and the rear finger is situated in a rear chamber of the outer cover.