A cable assembly includes an insulative housing (1) including a mating portion (12), a mounting portion (13) extending rearward from the mating portion and a base portion connected to the mounting portion. A lock tab (132) is formed on the mating portion and disposed adjacent to the mounting portion. A plurality of contacts (21, 22) received in the insulated housing and connected to wires (102). A retaining member (15) is connected to the base portion of the insulative housing, said retaining member having a passageway extending along a longitudinal direction. A sliding member (5) accommodated in the passageway of the retaining member and capable of moving along therein. A spring member (6) is received in the passageway of the retaining member for pushing the sliding member sliding along the longitudinal direction to reach a lateral side of the mounting portion; and a pulling tape (7) attached to the sliding member (5) for pulling the sliding member away from the lateral side of the mounting portion.