Apple Macintosh Performa 6400 Series - Manual (Page 46)

Connecting the Apple PlainTalk microphone
Your computer has a sound input port (≈), which you can use to connect an
Apple PlainTalk Microphone. The Apple PlainTalk Microphone is included
with some computer models. If your computer did not include an Apple
PlainTalk Microphone, you can purchase one at an Apple-authorized dealer.
You cannot connect non-Apple microphones.
Note: The sound input port does not support the Apple Omni microphone
(the round microphone shipped with some earlier models of Macintosh) or
the attenuated RCA adapter provided with some models of Macintosh.
To connect and position the external microphone, follow the steps below.
Note: If you want to record sound using a microphone built in to a monitor,
see the “Sound” topic of Macintosh Guide, available in the Guide (h) menu.
Then select the subtopic, “How do I record or remove a sound?”
1 Shut down the Macintosh.
2 Plug the microphone’s connector into the sound input port ( ≈ ) on the back of the
computer.
Apple PlainTalk Microphone
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