Cables of many forms are pervasive in foodservice equipment. A cable is a wire or grouping of wires usually insulated and held together within an overall sheath. The assembly is used for the transmission of electrical power or electrical signals to and from various components within a piece of equipment. Cables may be housed internally such as with ribbon cables, or may be external such as with power cords. An electrical cable is an assembly of one or more wires running side by side or bundled, which is used to carry electric current. A cable assembly is the composition of one or more electrical cables and their corresponding connectors. A cable assembly is not necessarily suitable for connecting two devices but can be a partial product. Cable assemblies can also take the form of a cable tree or cable harness, used to connect many terminals together. Examples of interfaces in restaurant equipment may be as simple as an on-off button to complex combi-oven menu setting and selection control. The interface then connects to and sends commands to internal circuitry, relays, and switches to control the equipment operation. The user interface (UI), is the space where interactions between humans and machines occur. The interface allows effective operation and control of the machine from the human end. Advanced interfaces feed back that provides operating status information to the operator.