There's one card that is 16 bit and could work. alexh has the info as AFAIK he helped develop it. It needs a driver though.
Found the thread you talked about. The card is a "Oxsemi CFU950."
http://eab.abime.net/showthread.php?t=38391Looks like anyone who wants (is ABLE ) to write a drive could probably get that working. But the odds there... ;-(
Considering the power issues (especially drawing power from the Amiga, which can be picky about power draw), if you got it working, you'd want to attach it to a powered HUB, to keep the draw light.
I wonder if Giloo (who wrote ANAIS, the USB stack) would be interested in that? He's probably got the best skill set for a driver with his understanding of Amiga USB.
Of course, someone would have to source some cards and get him one and the info alexh had.
desiv