Dell E2416HM User Manual page 51

OSD Messages
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. Recommended mode is 1366 x 768 (for E1916H /
E1916He) or 1600 x 900 (for E2016H) or 1920 x 1080 (for E2216H / E2316H / E2316Hr /
E2416H / E2416HM).
Operating the Monitor 51