Just curious about the way Argyll access the Huey. I have a Huey Pro and when I connect it to my PCs, XP or Vista, it comes up as : > USB Human Interface Device How weird is that? I was expecting some binding to libusb0.dll but no, that does seem to work like that. So I tried spotread -v -yl with the Huey connected and spotread found it, although it does not seem to identify it by name? I get : > Connecting to the instrument ... > Defaulting to emission instrument > Init instrument success ! Is this how it works with the Huey? Roger Breton