A multifunction power/data distribution system which consists of a cable system that provides power, data, and air cooling from a single wall outlet. Each device, has a single cable which brings power, data, and/or cooled air to that device. The system includes an appliance coupler assembly which may incorporate a fiber optics signal line, a coax cable, a cooled air supply line, and/or a telephone line. The data lines may be combined into a single high bandwidth line. Only a single cable is required to be run between the appliance coupler socket on the wall and an appliance, such as a PC, telephone, etc., to connect the appliance to an external power source, to a data network, to telephone network, or to a source of air cooling. The system provides for, and describes several types of, mating wall sockets and appliance end plugs.