Looks like there is no "elegant" solution any more. It works with the adapters, as this thread says: https://forums.presonus.com/viewtopic.php?f=64&t=23019.
If you don't need to go the Dante road, don't do it. For just connecting your mixer and your computer it's not worth the money, but if you NEED to have a network with a lot of connectivity, it's worth any cent. Latency is no problem. Your MacBook Air is fast enough for 16 tracks and more...
Have a look around int he AI forum and feel free to ask your questions there. There are helpful people around. 