Using The Internal Speakers; Connecting An Audio Device - HP Compaq NX7000 Reference Manual

Using the Internal Speakers

The internal speakers play sound in stereo from applications, the
operating system, games, drive media, the Internet, and other
sources.
If an external device, such as a headset, is connected to the
audio-out jack, the internal speakers are disabled.
Identifying the internal speakers

Connecting an Audio Device

WARNING: To reduce the risk of personal injury, adjust the volume
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before putting on headphones or a headset.
CAUTION: To prevent possible damage to an external device, do not
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plug a monaural (single sound channel) plug into the audio-out jack.
Startup and Reference Guide—Part 2
Multimedia
6–3