This is probably one of the best external HDD . Everything is good . I have been using this HDD from almost 8 months but I have no complains about it performance . The only thing that I did not like about it is materials quality . The cable that I get with this HDD is kinda loose and it gets disconnected all the time. Anyways it supports both USB 2.0 and 3.0. the speed of this HDD almost same for beginning till now .