Dell Latitude X300 - Manual (Page 3)

If the computer is connected to an electrical outlet, the light operates as follows:
¡ Solid green: The battery is charging.
¡ Flashing green: The battery is almost fully charged.
¡ Off: The battery is fully charged.
If the computer is running on a battery, the light operates as follows:
¡ Off: The battery is adequately charged (or the computer is turned off).
¡ Flashing orange: The battery charge is low.
¡ Solid orange: The battery charge is critically low.
keyboard status lights
The green lights located on the keyboard indicate the following:
Device Status Lights
Turns on when you turn on the computer or blinks steadily when the computer is in standby mode..
Turns on when the computer reads or writes data.
NOTICE: To avoid loss of data, never turn off the computer while the light is flashing.
Indicates battery charge status.
Turns on only if the Bluetooth™ module is already installed and the wireless antenna is enabled. To enable or disable the antenna, press <Fn><F2>.
NOTE: The wireless features on your computer, including Bluetooth and Mini PCI Wi-Fi, are optional. For more information, see the documentation that
came with your wireless technology.