Apple Video System - Manual (Page 55)

1 Make sure that both the Macintosh and the video equipment
are turned off.
2 Attach one end of the video cable to the Video Out port on
the video equipment.
3 Plug the other end of the video cable into the S-video input
port on the video input card.
About the S-video port: The S-video port accepts 4-pin and
7-pin connectors.
If the connector doesn’t slide easily into the port, realign it
and try again. Avoid using force, which could damage the
card or the connector.
4 Insert the RCA plugs on one end of the audio cables into the
left and right Audio Out ports on the video equipment.
If you’re using a Y-adapter audio cable: Plug the single
end of the cable into the Audio Out port on your video
equipment.
49 Installing the Card and Software and Connecting Video Equipment