Toshiba Tecra S2 - Manual (Page 52)

TECRA A3/S2 2-3
The Grand Tour
Internal Microphone Built-in Internal Microphone.
(This function is available depending on the model
you purchased.)
Volume Control Use this dial to adjust the volume of the stereo
speakers.
The audio speakers. Volume can be controlled
either with the volume dial on the front side of the
computer, or with the Volume setting in Windows
XP.