Patent ID: 8597059

Claim:
An apparatus comprising a cable plug and socket configured for a socket-jack system that connects a power supply unit to a load device over a 2 wire cable, the cable plug being selectively moveable to one of a plurality of positions for selecting a predetermined output voltage or other operational characteristic for the load device; wherein the socket of the socket-jack system; and the cable plug are configured to lock the socket and cable plug in any of a plurality of the selected positions relative to each other, to establish a selected voltage level at each of the selected positions; wherein the socket has a pin assembly with a plurality of signal pins, selected signal pins being configured to connect with mating connectors of the cable plug when the cable plug and socket are in a selected position relative to each other, to establish circuit connection through the selected pins and mating connectors; and wherein the cable plug comprises a locator drum, a locator tube disposed within the locator drum, the locator tube being selectively engaged with the locator drum so as to be moveable with the locator drum and being selectively disengaged with the locator drum so as to be moveable relative to the locator tube, a locking mechanism that can be selectively engaged with and disengaged from the locator drum, and a pin assembly located partially inside the socket, the pin assembly including a plurality of selector pins, each oriented to establish a circuit connection with a mating connector of the cable plug when the cable plug is in a selected position relative to the socket.