A cable connector assembly (100) includes an insulative housing (22) having a plurality of contacts received therein, a cable assembly (3) connected with the contacts by a printed circuit board (5), an upper shielding member (11) and a lower shielding member (12) together with the upper shielding member to form a receiving space (10). Each of the upper shielding member and the lower shielding member have a base portion (111, 121) and a plurality of vertical walls (113, 114, 115, 123, 124, 125) extending from the base portion. The lower shielding member (12) defines a stopping portion (126) to prevent the upper shielding member (11) from moving along a transverse direction. The stopping portion (126) is of U-shaped and comprises a first restricting flake (1261) and a second restricting flake (1262), and a corresponding vertical wall (113) of the upper shielding member is located between the first restricting flake (1261) and the second restricting flake (1262).