Dell S2722QC User Manual page 56

You will see the following message before the Lock function is activated:
NOTE: The message may slightly differ, depending on the selected
settings.
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.
NOTE: The message may slightly differ, depending on the connected
input signal.
The OSD functions only in the normal operation mode. If you press any button other
than the power button 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 slightly differ, depending on the connected
input signal.
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56 Operating the monitor