Dell UltraSharp 49 U4924DW 49" WQHD Ultrawide Curved Monitor - Manual (Page 65)

Operating the monitor
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Input Source Use the Input Source menu to select between the
different video signals that may be connected to your
monitor.
USB-C 90W
Select the USB-C 90W input when you are using
the USB Type-C connector. Press the joystick to
confirm the selection.
DP Select the DP input when you are using the
DisplayPort (DP) connector. Press the joystick to
confirm the selection.
HDMI 1 Select the HDMI 1 input when you are using the
HDMI 1 connector. Press the joystick to confirm the
selection.
HDMI 2 Select the HDMI 2 input when you are using the
HDMI 2 connector. Press the joystick to confirm the
selection.
Auto Select Turning on the function allows you to scan for
available input sources.