ethtool says that "Supported ports: [ TP MII ]" and "Port: MII". I guess that TP means twisted pair and Media Independent Interface. However physically I see that network card uses twisted pair cable, not this MII connector. So how can it be explained?
All modern Ethernet chips have the MAC built-in, and use a MII protocol over GMII, RGMII, or SerDes physical ports to communicate with the PHY device (even if it's built-in, this is usually true). If it's going to be a twisted pair interface, from the PHY the signal passes through a set of transformers and into the RJ-45 connection.