Dell XPS 9315 External Display Connection Manual page 8

● Connect up to two external displays using a USB-C docking station:
● Connect up to three external displays using a USB-C docking station:
With the internal display turned off
NOTE: Ensure that you turn off the computer's internal display before connecting the external displays. For more
information, see Turn off the internal
You can connect external displays directly to the Thunderbolt 4 (USB-C) ports, or up to four external displays using a USB-C
docking station and a direct connection to the Thunderbolt 4 (USB-C) port with a USB-C or Thunderbolt cable.
8 Connect external displays
display.