> There the situation is much worse.  There's no standard for USB-to-serial
> (Microsoft vetoed it).  NetBSD currently only supports dongles with the FTDI
> chip.  But if you can get the specs for the chip in a dongle writing a driver is
> not that hard (it's getting the specs that is hard; some chip vendors refuse
> to give the out).
such vendors probably prefer having less clients instead of more...
in my opinion the only right solution is NOT buying such hardware