Compaq Armada 1700 Reference Manual page 101

The computer provides the following internal and external audio
capabilities:
Stereo speaker/headphone
line-out jack
M
icrophone line-in jack
Volume control (up)
Volume control (down)
Stereo speakers
Internal microphone
Connects stereo speakers,
headphones, or a headset. The jack
requires 3.5 mm, 3-conductor plug.
Connects an external mono
microphone. The jack requires a
3.5mm, 2-conductor or 3-conductor
plug.
Increases volume to the built-in
speakers, to external speakers, or to
headphones plugged into the stereo
speaker/headphone jack on the
computer.
Decreases volume to the built-in
speakers, to external speakers, or to
headphones plugged into the stereo
speaker/headphone jack on the
computer.
Built-in speakers for high-quality
stereo sound and multimedia sound
sytem.
Built-in monophonic microphone for
the multimedia sound sytem.