Dell UltraSharp 34 User Manual page 48

PIP/PBP
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48 Operating the monitor
This function brings up a window displaying image
from another input source.
Main Window
USB-C
X X
USB-C
DP
HDMI 1
HDMI 2
NOTE: The images under PBP will be displayed at
the center of the screen, not full screen.
Sub-Window
HDMI 1
DP
X X
X X
HDMI 2
X X