usb nic

I'm running OpenWRT on Proxmox VM and so far everything are going fine but the Mini PC got only 1 ethernet port and I heard people say that have both WAN and LAN on single port make internet speed become lower than it should be so I decided to get a Gigabit Ethernet to USb 3.0 (UE300) but I...

Hi All, Thought I'd try a couple of Dlink DUB-250 USB 2.5Gbps ethernet adapters (on two different proxmox nodes) but both only seem to connect at half duplex and both report auto-negotiation is not supported/enabled yet the dlink website suggests they should support this...