I juste received my AV.io HD and plugged it on a Windows 7 laptop.
At the end of the driver installation, I’ve got a failure, see the (French) screencopy.
After the red cross, the sentence means “no driver has been found”
The Windows 7 is up to date (7601 service pack 1).
The device will work without issue. The Config, refers to the optional configuration tool that can be downloaded from the device support page.
The config tool’s main purpose is to update the firmware on the device itself. If the LED on the device is Blue (USB 3.0) or Green (USB 2.0) then the device is working correctly