Leadtek TV-OUT (6 pin) Pinout of the PS/2 connector used on some Leadtek cards as tvout connectors. Just hook up an rca to the composite pins and you have yourself a cable.
Apple AudioVision connector The Power Macintosh computers provide connection to AudioVision monitors (and other monitors when used with an adapter cable) by means of an AudioVision HDI-45 monitor socket on their back panels.