I also use mini PCs with my current NUC attached to the OTA. Using short cables connected directly from individual connectors on the NUC: USB-C to the image camera, USB to the guide camera, USB to the autofocuser. No hub is necessary and two USB connections are still available as spares. Easily running SGP and any other software needed.
The NUC i5 severed me flawlessly for a few years and I just upgraded to an NUC i7 10th gen with WiFi-6. Now transferring the files the night before is much quicker.