I saw a penguin logo on one of these.  Keyspan has started distributing a
Linux driver with very aggressive attempts to restrict the distribution of
their firmware, but I don't know how much they care.  The driver covers
almost all of their widgets, supposedly.  I dropped them a line to ask for
permission to copy the raw hex firmware files, and if that can be had, perhaps
a driver can be obtained.

(Not that this is all *THAT* useful, given the existance of other supported
hardware, but it's a nice idea.)

-s