Hi, I'm assuming you're talking win7x64 or something modern and nothing silly like WinXP x64... One possibility may be to run a Virtual Box with XP on it. Virtual box can grab USB devices and redirect them to the virtual PC, which could be XP or whatever else you install. I've found it to work quite well for some things, although I haven't tested it with deices that I don't have drivers for on the host system. (Although, supposedly you can set virtual box to automatically redirect PID/VID combinations to the host system). If they really are FTDI drivers, and you can live without signed drivers, you may be able to make a new .inf file for updated drivers. You'll need the old drivers, to get the correct PID/VID combination and description strings from. FTDI has some nice utilities to make 'new' driver INF files for you... I may be able to point you in the right direction if you can verify the drivers are FTDI drivers. Dan On 5/14/2014 12:00 PM, volt-nuts-request@febo.com wrote: > I have a Signametrics SMU2064 usb box. Signametrics where bought by Agilent > in 2010? and Agilent do not maintain software /drivers any more. > > I'd like to run it under W64 if I could find usb drivers / updates. > > It seems like Pickering, Marvin are producing some of the Signametrics > boxes, at least PXI versions. I have tried their software but it seems usb > drivers are not included. I think there are ftdi usb ic's in there... > > Does anyone here have any experience in these, ideas on how it could be > solved?