Dell P2421 - OSD Warning Message

52  │  Operating the monitor
OSD warning message
When the monitor does not support a particular resolution mode, you will see the
following message:
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. Recomm
ended mode is 1920 x 1200.
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:
You will see the following message before the Lock function is activated:
NOTE: The message may be slightly different according to the selected
settings.