Having problem adding a new NIC ( Chelsio T422 ) to a proxmox server (Solved)

well, turns out they do show up in the pass-through devices, but how can I have them get loaded on the host machine?

Also, why only 3 Ethernet Controllers? shouldn’t it be 4? I bought this used from ebay. Could something possibly be wrong with the card?

I really appreciate the help. Thanks,