Originally Posted by clebin
Unless I'm missing your point, it just needs to support Posiedon. The drivers are already there.
I have no USB device for my Amigas so I don't know but I was under the impression that you can't expect just any USB device to work with Poseidon but need some luck for your hardware to work. May be I'm wrong but the thread linked above shows that there is some concern about what will work and what not.