The present disclosure provides a connector assembly. The connector assembly includes a wire-end connector. The wire-end connector includes a wafer, a shield plate and a twin-ax cable. The wafer includes a frame and a terminal group. The terminal group is supported by the frame. The terminal group includes a signal terminal pair and a ground plate. The ground plate includes a ground terminal on both sides of the signal terminal pair. The shield plate is electrically connected to the ground plate. The shield plate includes an opening that penetrates the shield plate. The twin-ax cable includes a pair of conductors and a ground portion. The pair of conductors extend into the opening of the shield plate and are electrically connected to the signal terminal pair. The ground portion electrically connects at least one of the shield plate and the ground plate.