An electrical connector includes an insulative housing having a base portion defining a receiving cavity therein and a mating portion unitarily formed with the base portion and protruding outwardly from a front face of the base portion so as to define an insertion opening in communication with the receiving cavity. A plurality of terminals are received in the receiving cavity, each of which has a contacting portion extending rearwardly and upwardly from a position adjacent to the insertion opening. A rear cover is assembled on a rear section of the base portion and severs as a rear wall of the base portion. The insulative housing is formed by a double-colored-injection method and the mating portion and the base portion are configured as different colors. The double-colored-injection method can save an assembling process for the electrical connector, which is helpful for reducing the manufacturing cost.