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20 About Your Computer
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KEYBOARD STATUS LIGHTS
The green lights located above the keyboard indicate the following:
POWER BUTTON—Press the power button to turn on the computer or to enter or exit a power management
mode.
NOTICE: To avoid losing data, shut down your computer instead of pressing the power button.
FINGERPRINT READER (OPTIONAL)—Helps to keep your Dell™ computer secure. When you slide your finger over
the reader, it uses your unique fingerprint to authenticate your user identity. For information on how to
activate and use the security management software that controls the fingerprint reader, see "Security
Management Software" on page 77.
AMBIENT LIGHT SENSOR—Detects available environmental light and automatically increases or decreases the
display backlighting to compensate for low-light and high-light environments. Press the <Fn> and left-
arrow keys to enable or disable the sensor ("Using the Ambient Light Sensor" on page 47).
NOTE: The ambient light sensor is disabled when your computer is connected to AC power.
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.
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