Dell XPS 2720 Owner's Manual page 115

The display settings controls functions as describe below:
•
Decrease display brightness: Touch to decrease the display brightness.
•
Increase display brightness: Touch to increase the display brightness.
•
Screen off: Touch to turn off the screen.
•
Input source select: Touch to switch between video input source.
•
Decrease display brightness/volume: Touch once to select volume controls and
touch again to decrease the volume.
When in display brightness controls, touch to decrease the display brightness.
•
Increase display brightness/volume: Touch once to select display brightness
controls and touch again to increase the display brightness.
When in volume controls, touch to increase the volume.
The display settings controls provide an on-screen display (OSD) when your computer is
connected to an external video output device.
NOTE: OSD may not be supported on some computers.
The following table describes the OSD for each display settings control:
OSD Display settings
control
Volume
Brightness
Input source select Touch to switch between video input source.
Left
Right
Close
Description
Touch to access the volume controls menu.
Touch to access the brightness controls menu.
Touch to decrease volume or brightness levels.
Touch to increase volume or brightness levels.
Touch to close the OSD controls.
Display-Settings Controls
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