Multimedia The notebook has 2 audio jacks: ■ The microphone jack 1 connects an optional monaural or stereo microphone. If a monaural microphone is connected, the same information is recorded on both channels. ■ The audio-out jack 2 , sometimes called a line-out jack, connects headphones or powered external stereo speakers. The audio-out jack is also used to connect the audio functions of an audio/video device such as a television or VCR. When you connect a device to the audio-out jack: ❏ Use only a 3.5-mm plug. ❏ The internal speakers are disabled. Identifying the audio jacks 6–4 Startup and Reference Guide—Part 2