Dell UltraSharp U3821DW User Manual page 57

Fast Wakeup The default setting is Off. Selecting On may prevent
the monitor from going into Standby mode.
Pressing the joystick may also wake up the monitor
after it goes into Standby mode.
Reset Resets all settings under the Personalize menu to
Personalization the factory preset values.
Others Select this option to adjust the OSD settings, such as
DDC/CI, LCD Conditioning, and so on.
Display Info Displays the monitor's current settings.
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Operating the monitor 57