Add a second Intel network port to the EliteDesk 800 G3 Min, which should work with ProDesk too. I found a Wifi to network port adapter that works better then the one used for a prior G4 second network port video. I use the same 3D printed bracket as the prior video.
Network adapter https://www.amazon.com/dp/B0D8RDZ4C6?...
If that one doesn't work try using this https://www.amazon.com/s?k=I210AT+ben...
Screws https://www.amazon.com/dp/B0CYSKG1WQ?...
The 3d design for the bracket is https://www.thingiverse.com/thing:656... - much thanks to Casper Pedersen (casperghst42)
I used Craftcloud https://craftcloud3d.com/ mainly because you can get a quote without creating an account. I have no affiliation with them.