Dell Precision M4300 User Manual page 18

K E Y B O A R D S T A T U S L I G H T S
The green lights located above the keyboard indicate the following:
V O L U M E C O N T R O L B U T T O N S
— Press this button to turn off the speakers.
M U T E B U T T O N
A M B I E N T L I G H T S E N S O R
Light Sensor" on page 48.
16
About Your Computer
Turns on when the numeric keypad is enabled.
9
Turns on when the uppercase letter function is enabled.
A
Turns on when the scroll lock function is enabled.
— Press these buttons to adjust the speaker volume.
— Helps to control display brightness. For more information, see "Using the Ambient