Apple Power Macintosh 4400 - Manual (Page 48)

Connecting audio equipment
Your Macintosh can play and record stereo sound from a variety of sources.
By connecting audio equipment to the sound input and output ports on the
computer, you can listen to or reproduce stereo sound. Using the internal
CD-ROM player, your computer can also play and record sound from audio
compact discs (CDs).
For information on using Macintosh system software to choose audio input
and output options, record an alert sound, or play audio CDs, see the “Sound”
topic area of Macintosh Guide, available in the Guide (h) menu.
About your computer’s sound ports and features
The sound input port is marked with an icon of a microphone (≈). The sound
output port is marked with an icon of a speaker (-).
Sound input port Sound output port
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