What is the difference between this drive and the one with item no. 6654786 (https://www.digitec.ch/de/s1/product/asus-zendrive-u9m-dvd-laufwerk-cd-brenner-cd-laufwerk-dvd-brenner-optisches-laufwerk-6654786)? Theoretically they are the same model but the specs Digitec has listed are somehow different. This one, for example, supposedly can't burn CDs/DVDs, is that true? Does reading/copying and burning CDs work with a Mac?