A plug and socket for coaxial cable. RCA connectors are used for analog audio signals (see analog audio). They are also used for digital audio (see S/PDIF) and analog video (see composite video).

most CD-ROM drives could pass the digital data over the computer's bus (see digital audio extraction). PCs today use a standard four-pin cable; however, earlier cards and drives used connectors ...

I asked one of the audio techs about that during one show, and he held up the end of the snake where all the cables break out into separate connectors. The chunky silver plugs clinked together as ...