Dell UltraSharp 42.51" 4K Monitor - Manual (Page 30)

30 | Setting up the monitor
Using the tilt, swivel, and vertical extension
NOTE: The following instructions are applicable only for the stand that
was shipped with your monitor. If you are connecting a stand that you
purchased from any other source, follow the set up instructions that were
included with the stand.
Tilt, swivel and vertical extension
With the stand attached to the monitor, you can tilt the monitor for the most
comfortable viewing angle.
5°
20°
20°
60 mm
10°
NOTE: The stand is not installed at the factory when shipped.