Obsolete item (from Jan.2010) without keyboard installation CD, not recognized via USB. Only the very glaring blue light went. You have to load the manufacturer down software / drivers. Keyboard came in such a large double packaging, dented on. No Ausstopfmaterial available. Despite that I had to send back about the new cancellation / return policies, the keyboard as "nonfunctional" in okluge, I have to pay the return costs. This was definitely the last Amazon was Mark Place order for me, since I'd rather go back to a store or only directly from Amazon. Man must now read in every dealer his new revocation provisions and use the relevant form and send it back by fax or email. Now I like AMAZON because everything remains with the return delivery costs the same, only the stupid revocation form is to be filled (but there may Amazon nix it).