Using sound input and output devices

Connecting a microphone

Your PowerBook has a sound input port to which you can connect an external microphone. (Sound recording is described in the chapter Adapting Your Computer to Your Own Use.)

1.Open the door covering the back panel of your computer.

2.Plug the microphone into the sound input port on the back panel. The sound input port has the icon X.

Sound input port Microphone

3. Decide where you want to place the microphone.

sWarning: Do not plug a sound output device (such as a pair of headphones) into the sound input port. Doing so may damage your audio equipment. s

Sound output devices

The PowerBook also has a sound output port (marked with the icon -) to which you can connect speakers, an amplifier, headphones, or other audio output devices. The sound output port accepts a standard stereo miniplug, like that used to attach headphones to a portable tape player.

230 Chapter 13: Expanding Your Computer System

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Apple 145B manual Connecting a microphone, Sound output devices, Open the door covering the back panel of your computer