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32 About Your Computer
MEMORY MODULE/COIN-CELL BATTERY COMPARTMENT — Compartment that
contains the DIMM B memory module and the coin-cell battery. For additional
information, see "Adding and Replacing Parts" on page 135.
RIGHT SPEAKER — To adjust the volume of the integrated speaker, press the volume
control buttons or the mute button.
WIRELESS MINI CARD COMPARTMENT — Compartment for WLAN, WWAN, or
WPAN Mini Cards (see "Wireless Mini Cards" on page 154).
BATTERY — When a battery is installed, you can use the computer without
connecting the computer to an electrical outlet (see "Using a Battery" on page 45).
BATTERY CHARGE/HEALTH GAUGE — Provides information on the battery charge (see
"Checking the Battery Charge" on page 46).
BATTERY RELEASE LATCHES — Releases the battery (see "Replacing the Battery" on
page 50
for instructions).
CAUTION: Do not block, push objects into, or allow dust to accumulate in the air
vents. Do not store your computer in a low-airflow environment, such as a closed
briefcase, while it is running. Restricting the airflow can damage the computer or
cause a fire.
AIR VENTS — The computer uses an internal fan to create airflow through the vents,
which prevents the computer from overheating. The computer turns the fan on when
the computer gets hot. Fan noise is normal and does not indicate a problem with the
fan or the computer.
HARD DRIVE — Stores software and data.