Dell UltraSharp 49 U4924DW 49" WQHD Ultrawide Curved Monitor - Manual (Page 57)

Setting up the monitor
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Connecting the monitor for USB-C
If the Dell PC* has two USB-C ports, the power state of each connected monitor
will sync with the PC.
For example, when the PC and two monitors are in an initial ON power state,
pressing the power button on Monitor 1 or Monitor 2 will turn OFF the PC, Monitor
1, and Monitor 2.
*Ensure to check the Dell PC for DPBS supportability.
NOTE: DPBS only supports the USB Type-C upstream port with
icon.