Current state of Intel AMT technology - supports configuration methods as described above. Many customers are happy with Host Based Configuration even of there is AMT Wired LAN port -for this method simplicity.
Some other OEMs (ex. Lenovo) provide passive dongle that converts non standard multi interface slim port (OneDock Plus in case of Lenovo X1 Yoga) to standard RJ45 socket. So AMT wired LAN that is build on board is accessible for its use with this special dongle.
What are you trying to achieve actually?
rgds
darek