Pictus wrote: > You must install Argyll drivers > http://www.argyllcms.com/doc/Installing_MSWindows.html You do _not_ have to do this, since the i1 Display Pro is an HID device. You _may_ install the libusb driver for it (although I haven't checked it works), but doing so will stop the X-Rite software from being able to use it. Graeme Gill.