Dell Alienware 17 R4 Setup And Specifications page 6

4. Connect a USB Type-C to Type-A dongle to the Thunderbolt 3 (USB Type-C) port on the back of your computer.
5. Connect the Oculus Rift tracker to the USB Type-A port at the left side of your computer.
6. Connect a USB Type-C to Type-A dongle to the USB 3.1 Gen 2 (Type-C) port at the left side of your computer.
7. Connect the XBOX controller to the USB Type-A port on the USB dongle.
8. Connect the Oculus Rift tracker for Touch to the USB Type-A port on the dongle.
6 Set up your computer