HP Compaq NX9040 Startup Manual page 38

Notebook Features
5
Stereo speakers (2)
6
Volume and mute buttons (3)
3–16
Produce stereo sound.
Decrease, mute, and increase the
system volume:
■
To decrease volume, use left
button.
■
To mute or restore volume, use
middle button.
■
To increase volume, use right
button.
Startup Guide