Dell Latitude D820 User Manual page 3

Turns on when you turn on the computer and blinks when the computer is in a power management mode.
Turns on when the computer reads or writes data.
NOTICE: To avoid loss of data, never turn off the computer while the
Turns on steadily or blinks to indicate battery charge status.
Turns on when wireless devices are enabled. To enable or disable WiFi, use the wireless switch on the left side of the computer.
Turns on when Bluetooth
of the computer.
NOTE: Bluetooth wireless technology is an optional feature on your computer, so the
technology with your computer. For more information, see the documentation that came with your Bluetooth wireless technology.
If the computer is connected to an electrical outlet, the
Solid green: The battery is charging.
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Flashing green: The battery is almost fully charged.
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Off: The battery is adequately charged (or external power is not available to charge the battery).
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If the computer is running on a battery, the
Off: The battery is adequately charged (or the computer is turned off).
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Flashing orange: The battery charge is low.
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Solid orange: The battery charge is critically low.
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speaker — To adjust the volume of the integrated speaker, press the volume control buttons or mute button.
keyboard — The keyboard includes a numeric keypad as well as the Windows logo key. For information on supported keyboard shortcuts, see
Keypad.
touch pad — Provides the functionality of a mouse. See
Touch pad/track stick buttons —
NOTE: If you ordered the optional fingerprint reader with your computer, the reader is located between the touch pad buttons.
ambient light sensor (ALS) —
keyboard status lights
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wireless technology is enabled. To enable or disable Bluetooth wireless technology, use the wireless switch on the left side
light operates as follows:
light operates as follows:
Touch Pad for more information.
Provide the functionality of a mouse. See
Helps to control display brightness. For more information, see
light is flashing.
icon turns on only if you ordered Bluetooth wireless
Touch Pad for more information.
Using the Ambient Light
Numeric
Sensor.