Dell P2724DEB User Manual page 55

When the monitor and PC power state are both ON, while you press and hold 4
seconds on monitor power button, the screen prompt will ask if you would like to
shut down the PC.
Press and hold 4s
When the monitor and PC power state are both ON, while you press and hold 10
seconds on monitor power button, the PC will shut down.
Press and hold 10s
USB-C
Slide to shut down your PC
USB-C
Setting up the monitor
PC will shut down
PC will shut down
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