[Guide] NAS Killer 4.0 - fast, quiet, power efficient, and flexible - starting at $125

This is logical but I think I can work around this using expansion cards like this: https://www.amazon.com/dp/B07SZDK6CZ

I have written more about this here and would love more feedback: Any technical reasons why we cant have a NAS Killer using the intel HP 290 or ProDesk 400 G4?