Dell S2421HN User Manual page 34

1. Press and hold Button 4 for four seconds, a menu appears on the screen.
2. Select one of the following options:
Options
1
Menu Button lock
2
Power Button lock
3
Menu and Power Button
lock
4
Built-in Diagnostics
To unlock the button(s).
Press and hold Button 4 for foru seconds until a menu appears on the screen. The
following table describes the options to unlock the front-panel control buttons.
Dell 24/27 Monitor
Select Option:
34 | Operating the monitor
Dell 24/27 Monitor
Select Option:
Description
Select this option to lock OSD menu function.
Use this option to lock power button. This will
prevent the user to turn off the monitor using the
power button.
Use this option to lock OSD menu and power
button to turn off the monitor.
Use this option to run the built-in diagnostics, see
Built-in Diagnostics.
Dell 24/27 Monitor
Select Option:
Dell 24/27 Monitor
Select Option: