Dell G2422HS User Manual page 39

Brightness/ Adjusts the brightness and the contrast of the
Contrast display.
Brightness Brightness adjusts the luminance of the backlight.
Move the joystick up to increase the brightness level
or move the joystick down to decrease the brightness
level (min. 0 / max. 100).
Contrast Adjusts the Brightness first, and then adjust the
Contrast only if further adjustment is necessary.
Move the joystick up to increase the contrast level or
move the joystick down to decrease the contrast
level (min. 0 / max. 100).
The Contrast function adjusts the degree of
difference between darkness and lightness on the
monitor screen.
Operating the monitor
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