It is worth noting that while the norns menu says WIFI the new network management logic supports wired networks as well. Once WIFI or a wired network is configured it should just auto connect via whatever is plugged into norns.
For those looking for wired network speed and reliability I am using this USB to gigabit adapter with great success:
UPDATE: I should add that currently the system assumes the network you are connecting to has DHCP setup. Wired connections should “just work” without configuration.
Another change is that multiple networks can be configured, this is particularly useful with WIFI setups if moving between different rooms (or home vs another venue) means connecting to a different network. Once configured norns should auto connect to whatever known network it can find automatically.