Dell UltraSharp U2421HE User Manual page 40

Icon Menu and
Submenus
Brightness/
Contrast
Brightness
Contrast
Input Source
40 | Operating the Monitor
Description
Use this menu to activate Brightness/Contrast adjustment.
Dell UltraSharp 24/27 Monitor
Brightness/Contrast
Input Source
Color
Display
Menu
Personalize
Others
Brightness adjusts the luminance of the backlight
(minimum 0; maximum 100).
Press the button to increase brightness.
Press the button to decrease brightness.
Adjust the Brightness first, and then adjust Contrast only if
further adjustment is necessary.
Press the button to increase contrast and press the
button to decrease contrast (between 0 and 100).
Contrast adjusts the difference between darkness and lightness
on the monitor.
Use the Input Source menu to select between different
video inputs that are connected to your monitor.
Dell UltraSharp 24/27 Monitor
Brightness/Contrast
Input Source
Color
Display
Menu
Personalize
Others
USB Type-C
DP
HDMI
Auto Select
Auto Select for USB-C
Reset Input Source
75 %
75 %
On
Prompt for Multiple Inputs