A cable connector component is suitable for being installed on a panel which is provided with a butt joint opening and a plurality of openings communicated with the butt joint opening. The cable connector component comprises an insulator with a butt joint part and a side arm, a plurality of conductive terminals accommodated in the insulator, cables electrically connected with the conductive terminals and a locating piece installed on the side arm of the insulator and limited inside the side arm by the side arm. The upper and lower surfaces of the butt joint part are respectively provided withat least a stopping part corresponding to the openings. The stopping parts can pass through the openings on the panel along the longitudinal direction and then move for a certain distance along the transverse direction to be staggered from the openings. A clamping block is arranged at the front end of the locating piece and is accommodated in the butt joint opening of the panel. The locating piece can move backward in an elastic manner in the presence of external force to enable the clamping block to be placed out of the butt joint opening of the panel and enable the cable connector componentto break away from the panel after moving transversely and longitudinally.