Hello The controller was delivered packed very quickly and super. Installation is (remember external power supply) Easy .With the supplied driver CD it would under Windows7 already functioning (32bit), but offered himself (CnMemory) receives a latest Treiber.Jetzt comes the but. My hard disk (USB 3.0) throbbed madly turned on and off, that could not long go well but under All Programs - Renesas Electronic - USB Host Controller Driver - USB Host Controller Utility - you have the power saving function off (just tick set). Does then the controller Perfect and does exactly what it should. I hope this was helpful, I am very satisfied. Have fun with it.