Dell P91F - Working inside your computer; Safety instructions

Connect external displays
You can connect up to three external displays to the USB-C ports or up to four external displays using the a docking station on
your computer.
Integrated graphics
Connecting external displays to XPS 15 9510
NOTE: When connecting a display using an adapter or docking station, it is recommended that you connect the display to
the docking station first and then connect the docking station to the USB-C port on your computer.
With the computer display turned on
You can connect up to three external displays directly to USB-C ports.
● Connect an external display directly to your computer by using a USB-C or Thunderbolt cable:
2
6 Connect external displays