Dell UltraSharp U3821DW User Manual page 61

When you change the default setting of power saving features for the first time,
such as USB-C Charging
Compensation, or Fast Wakeup, the following message appears:
NOTE: If you select Yes for either of the features mentioned above, the
message will not appear next time when you intend to change the
settings of these features. When you perform a factory reset, the
message will appear again.
When the monitor goes into Standby mode, the following message appears:
Activate the computer and wake up the monitor to gain access to the OSD.
The OSD functions only in the normal operation mode. If you press the joystick
during the Standby mode, the following message will appear depending on the
selected input:
Activate the computer and the monitor to gain access to the OSD.
NOTE: The message may be slightly different according to the
connected input signal.
90W, Other USB Charging, Uniformity
Operating the monitor
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