Dell Latitude D600 - Manual (Page 4)

keyboard status lights
The green lights located above the keyboard indicate the following:
Left View
air vents — The computer uses an internal fan to create airflow through the vents, which prevents the computer from overheating.
PC Card slot — Supports one PC Card, such as a modem or network adapter. The computer ships with a plastic blank installed in the slot. For more
information, see " Using PC Cards ."
smart card slot — Supports one smart card. For more information, see " Using Smart Cards ."
infrared sensor — Lets you transfer files from your computer to another infrared-compatible device without using cable connections.
Turns on when the numeric keypad is enabled.
Turns on when the uppercase letter function is enabled.
Turns on when the scroll lock function is enabled.
1 air vents (2) 5 audio connectors (2)
2 PC Card slot 6 hard drive
3 smart card slot 7 security cable slot
4 infrared sensor
NOTE: The computer turns on the fan when the computer gets hot. Fan noise is normal and does not indicate a problem with the fans or the computer.
CAUTION: Do not block, push objects into, or allow dust to accumulate in the air vents. Do not store your Dell™ 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.