I've got B0, am guessing it wants B1.

Latest version I see references to is 5.3.something, but have run into
problems/dead ends in each of the half-dozen sites I've tried to download it

Anybody got a readily-available source for
NEC PCI to USB Enhanced Host Controller B1?

Also, what about "Standard Enhanced PCI to USB HBost Controller"? The Driver
tab on this one shows no props, so I'm guessing it's kind of old too.

Finally, what about all the "USB Root Hub" devices that I see?