Apple Power Macintosh 8600 - Manual (Page 77)

The computer’s sound input and output ports accept these 3.5-mm
connectors:
The “stereo miniplug” is the smaller of the two and is found most often on
stereo equipment. The extended miniplug, which is slightly longer and is
found on voice quality microphones (such as the Apple PlainTalk
Microphone), works only in your computer’s sound input port (≈). (Even
though it will fit into the sound output port, it won’t work there.) If your
equipment has a different type of connector from those shown here, you can
purchase an adapter at an electronics supply store.
The left and right RCA-type audio ports
Your computer also has ports that accept left and right input and output
through RCA-type connectors. These connectors are found on devices like
videocassette recorders (VCRs) and tape decks. The RCA ports are color-
coded to help you properly attach your audio equipment.
Audio input ports (left & right)
Connect your Macintosh to the RCA-type
Audio Out ports of video or audio equipment
such as VCRs and tape decks - Audio output ports (left & right)
Connect your Macintosh to the RCA-type
Audio In ports of video or audio equipment
such as VCRs and tape decks -
Extended miniplug Stereo miniplug
77 Connecting Additional Equipment