In principle I can only associate myself with the other Rezensienten: Great, quiet, extremely flat and therefore space-saving device. The best thing for me though is the impressive Fehlerkorrekur - I had a very important documentary DVD that I had a student unfortunately scratched and I wanted umkopieren / had. Several burner gave up easily and reported that the DVD would be unreadable and I had almost given up - the Transcend device has to complain without even read the scratched DVD and I was able to burn a new one. Already alone for the unit was worth every penny. I would recommend the particles so highly recommend !!!