Dell P2222H User Manual page 57

• When the Power button is pressed. This indicates the Power button is in lock
state.
• When Up or Down or Left or Right direction or Power button are pressed.
This indicates OSD menu buttons and the Power button is in lock state.
Unlocking the OSD menu and Power buttons：
1. Press and hold the Up or Down or Left or Right direction for four seconds.
The unlock menu appears.
2. Select the unlock icon to unlock the buttons on the display.
Operating your monitor
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