Rotate Clockwise; Rotate Counterclockwise - Dell UltraSharp 25 Series User Manual

Rotate clockwise

Rotate counterclockwise

NOTE: To use the Display Rotation function (Landscape versus Portrait
view) with your Dell computer, you require an updated graphics driver
that is not included with this monitor. To download the graphics driver,
go to www.dell.com/support
Drivers for latest driver updates.
NOTE: When in the Portrait View Mode, you may experience
performance degradation in graphic-intensive applications (3D Gaming
and etc.).
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60 Operating the monitor
and see the Download section for Video