Dell C2723H 27" Video Conferencing Monitor - Manual (Page 79)

Operating the Monitor
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79
The OSD functions only in the normal operation mode. If you press any button other
than the
Power Button during the Standby mode, the following message will
appear depending on the selected input:
NOTE: The message may be slightly different according to the
connected input signal.
Activate the computer and the monitor to gain access to the OSD .
NOTE: The message may be slightly different according to the
connected input signal.
If either DisplayPort or HDMI input is selected and the corresponding cable is not
connected, a dialog box as shown below appears.
or
NOTE: The message may be slightly different according to the
connected input signal.