Dell C2722DE 27" 16:9 IPS Video Conferencing Monitor - Manual (Page 65)

Operating the monitor | 65
To unlock the button(s).
Press the left directional navigation of Joystick for four seconds until a menu appears
on the screen. The following table describes the options to unlock the front-panel
control buttons.
Select Option:
Options Description
1
Menu Button unlock
Use this option to unlock OSD menu function.
2
Power Button unlock
Use this option to unlock power button to turn off
the monitor.
3
Menu and Power Button
unlock
Use this option to unlock OSD menu and power
button to turn off the monitor.