Apple Power Macintosh 4400 - Manual (Page 49)

The computer’s sound input port (≈) accepts the 3.5-mm audio connectors
shown below. The sound output port (-) (where you might connect external
speakers) accepts only the stereo miniplug.
The stereo miniplug is found most often on stereo equipment (such as
externally powered speakers). 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.
Connecting audio equipment
To play or record sound with your Macintosh, you can attach a microphone or
a pair of speakers.
For instructions on connecting specific equipment, see the following sections
later in this chapter:
m “Connecting an Apple PlainTalk Microphone”
m “Connecting External Stereo Speakers”
m “Connecting Headphones”
Extended miniplug Stereo miniplug
49 Connecting Equipment and Expanding Your Computer