starting an amplifier. Eventually this connector setup was replaced with the later ISO car stereo connector standard. It is now mainly found on older equipment, such as 16 mm movie projectors.. The connector is used on some LED lamps and halogen lamps to connect the bulb to the power supply. The two-pin DIN plug lacks the outer metal shell, so far less force is required to disconnect the plug accidentally. There are also three- and four-pin versions of this loudspeaker connector, used for example by Bang & Olufsen. See also DIN sync Hosiden Mini-DIN connector IBM PC keyboard#Connection PS/2 connector XLR connector Notes References DIN Connectors IEC 60574-3: Audiovisual, video and television equipment and systems — Part 3: Specification for connectors for the interconnection of equipment in audiovisual systems. Audiovisual connectors Surveillance Deutsches Institut für Normung DC power connectors Computer connectors