An cable assembly (1000) includes an insulative housing (7); a plurality of terminals (211, 222) received in the insulative housing; a cable (6) having a plurality of wires connected to the terminals; and a latching member (3a) assembled to the insulative housing, the latching member having a latching arm (32) and an inclined tab (324) upwardly and inwardly projecting from the latching arm; an actuating member (7) having a frame (70) and an elastic arm (71) protruding backwardly from a lateral side of the frame, and an actuating tab (72) protruding inwardly from the elastic arm; an external cover (51) with a deformable button (514) formed at a lateral side thereof. The deformable button is pressed to urge the elastic arm of the actuating member inwardly movement and the actuating tab moves inwardly to downwardly press the tab so as to lower the latching arm.