Dell P5524QT 55" UHD 4K Touchscreen Commercial Monitor - Manual (Page 12)

12 | About your display
6 USB 3.1 upstream
ports (3) Connect the USB cable that comes with your display
to the computer. Once this cable is connected, you
can use the USB downstream connectors on the
display and the touch screen function on the display.
NOTE: Refer to section on “ Input sources and USB
pairing ”.
7 USB 3.1 downstream
ports (3) Connect your USB device.
You can only use this connector after you have
connected the USB cable to the computer and USB
upstream connector on the display.
8 USB charging port USB 3.1 downstream port with BC 1.2 charging
capability at 2A (maximum).
9 RJ-45 connector Remote Network Management and control of display
via RJ-45.
Input sources and USB pairing
NOTE: Make sure to connect both input source cable and USB upstream cable
follow below pairing to enable touch function. EX: If you connect HDMI 1 +
USB 2, then touch no function.
Input sources USB upstream Touch function works or not
HDMI 1 USB 1 V
HDMI 2 USB 2 V
HDMI 3
USB 3 V
DP