The purpose of the present invention is to improve the performance properties of the cable terminal end assembly and to make its configuration compact. A cable having signal wires and a ground wire are arranged laterally in a casing which is provided with a coupling section for coupling to the electrical device. The signal wires and the ground wires are separated by an insulation plate, and extend out from the ends of the cable into the casing. Signal wires and ground wires are bonded, to specific respective contact strips disposed inside the coupling section. The electrical connections inside the casing are molded with moulding. The advantage of the assembly configuration is that the cables are arranged laterally to house many cables compactly in the casing, and the insulation plate eliminates any possibility of shorting between the signal and ground wires, and signal distribution to the device is made possible, without the necessity for such costly parts as printed circuit board, by customized selection of the contact strips to be joined to the signal wires and to the ground wires in accordance with the requirements of the device.