Dell Latitude 110L - Manual (Page 8)

memory module cover — Covers the compartment that contains the memory module(s).
battery-bay latch release — Releases the battery.
fan — The computer uses an internal fan to create airflow through the vents, which prevents the computer from overheating.
1 memory module cover 4 battery-bay latch release
2 hard drive 5 fan
3 battery/battery bay
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.
Attach headphones or speakers to the connector.
Attach record/playback devices, such as cassette players and
CD players, to the connector.