A warm welcome here in the Roku Community, @bmartski!
Thank you for posting your question about utilizing the USB-C input on your Roku Pro Series TV. I'd be happy to provide further information about this.
The Roku Pro Series TV's USB-C port is not capable of transmitting computer signals or outputting a computer to the TV. Its primary functions are charging devices and connecting USB drives.
I hope you find this information helpful. Feel free to reach out if you have further questions.
Happy Streaming!
Best regards,
Carly
Carly Y.
Roku Community Moderator