

I reckon it’s via an USB-Ethernet adapter.
If you use USB Hubs you could theoretically add as many as you want on a single USB port if you daisy chain the Hubs (if it’s a really large number some of the Hubs must have external power).
Granted, performance is limited.
Never tried it, though, so maybe there are further limitations.





Clearly German Authorities deciding what being a “Good Jew” is and splitting Jews into “Good Jews” and “Bad Jews”, is a German Tradition.