I just bought one of these from Costco and set it up on Saturday.
It is not recognized as a USB device under Windows 7 and there are not drivers on their website. The only way to move images to your computer is to use an SD card and then move them to the computer from there.
Scanning is very fast but images are darker than I think they should be.
The manual is poor at best.
For the price it is probably OK but I am going to return it tomorrow and spend more to get a slide scanner that is easier to use and that will provide a better quality scan.