Dell U2422H 23.8" 16:9 IPS Monitor - Manual (Page 68)

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Operating the Monitor
Personalize For U2422H/U2422H WOST/U2422HX:
For U2422HE:
p
Shortcut Key 1
Allows you to choose a feature from Preset Modes ,
Brightness/Contrast , Input Source , Aspect
Ratio , Rotation , or Display Info and set it as a
shortcut key.
Shortcut Key 2
Shortcut Key 3
Shortcut Key 4
Shortcut Key 5
Power Button
LED
Allows you to set the power LED indicator on or off
to save energy.