User’s Manual 4-31
TECRA A10/S10/M10/SatellitePro S300
Power Management
The audio controller in your computer can be turned off when the audio 
function is not used. To adjust the configuration of audio power 
management, click the battery button .
■ When audio power management is enabled, the circle button at the 
upper left of the Power Management is blue and convex.
■ When audio power management is disabled, the button is black and 
concave.
Speaker Configuration
Click the Auto Test button   to confirm the internal speakers or the 
headphone sound is coming from the right direction.
Default Format
You can change the sample rate and bit depth of sound.
Modem
This section describes how to connect and disconnect the internal modem 
to and from a telephone jack.
Region selection
Telecommunication regulations vary from one region to another, so you will 
need to make sure the internal modem’s settings are correct for the region 
in which it will be used.
■ Connection to any communication line other than an analog phone line 
could cause a computer system failure.
■ Connect the built-in modem only to ordinary analog phone lines.
■ Never connect the built-in modem to a digital line (ISDN).
■ Never connect the built-in modem to the digital connector on a 
public telephone or to a digital private branch exchange (PBX).
■ Never connect the built-in modem to a key telephone system for 
residences or offices. 
■ Avoid using your computer modem with the telephone cable connected 
during an electrical storm. There may be a remote risk of electric shock 
from lightning.
Modem functions cannot be used in models which are not equipped with a 
modem.
The built-in modem can be used only in specified countries and regions. 
Using the modem in an area not specified for use may cause a system 
failure. Check the specified areas carefully before using it.