Take the Kinect apart. Solder a 12v power supply to the USB 3.0 powered-B side pins where the connector joins the PCB (these are extra pins in addition to the standard USB 3.0 spec for special device power input/output) Connect the Kinect to the PC with a standard USB 3.0 B cable.
Is the Kinect compatible with PC?
Use it with a Windows 10 PC If you managed to grab one before being discontinued, the Kinect USB adapter allows the device to also be connected directly to a Windows PC, for use with the official software development kit (SDK) offered by Microsoft.
How do I use my Xbox Kinect as a webcam?
Connect the Kinect sensor to the computer via the devices USB connection cable. Now, whenever you launch a program that requires the use of a webcam, the Kinect sensor will show up as a compatible webcam device.
How do I use my Kinect v2 as a Webcam?
3:398:38How to Setup Kinect V2 as a Webcam - YouTubeYouTube