Dell Latitude D420 User Manual page 7

memory module/WLAN Mini-Card cover —
see Adding and Replacing Parts.
battery-bay latch release — Releases the battery. See
battery charge gauge — Provides information on the battery charge. For more information, see
battery — When a battery is installed, you can use the computer without connecting the computer to an electrical outlet. For more information, see
Battery.
docking device slot — Lets you attach your computer to a docking device. See the documentation that came with your docking device for additional
information.
NOTICE: Your computer features Dell Undock & Go™ technology that allows you to undock your computer without going into standby mode. Because
the computer may not automatically go into standby mode when it is undocked, be sure the settings in the Power Options control panel do not prohibit
the computer from going into standby mode. If you change the Power Options control panel to prohibit the computer from going into standby mode, you
greatly increase the chances of causing your battery to wear down quickly or causing your computer to overheat.
air vent — The computer uses an internal fan to create airflow through the vents, which prevents the computer from overheating.
NOTE: The computer turns on the fan when the computer gets hot. Fan noise is normal and does not indicate a problem with the fan or the computer.
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.
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Covers the compartment that contains one memory module and the WLAN Mini-Card. For additional information,
Using a Battery for instructions.
Using a Battery.
Using a