Dell P2723QE 27" 4K UHD USB Type-C Hub Monitor - Manual (Page 61)

Operating your monitor │ 61
OSD warning message
When the monitor does not support a particular resolution mode, you will see the following
message:
The current input timing is not supported by the monitor display.
Please change your input timing to 3840x2160, 60Hz or any other
monitor listed timing as per the monitor specifications.
This means that the monitor cannot synchronize with the signal that it is receiving from
the computer. See
Monitor specifications for the Horizontal and Vertical frequency
ranges addressable by this monitor. Recommended mode is 3840 x 2160.
NOTE: The message may be slightly different according to the connected
input signal.
You will see the following message before the DDC/CI function is disabled:
The function of adjusting display setting using PC application will be
disabled.
Do you wish to disable DDC/CI function?
Yes
No
You will see the following message before the Lock function is activated:
Are you sure you want to lock the Menu Buttons?
To unlock the Buttons, refer to the User’s Guide.
Yes
No
NOTE: The message may be slightly different according to the selected
settings.