works perfectly on PC (win 7 or mac Yosemite) with max flow rates against 250MB / s read / write of the controller non UASP I think. (Tested with a crucial m500). This makes it lose a star. Well anyway for any PC that does not have a controller usb3 last revision or even in this case if flow is sufficient (and the greater part of the time this is amply sufficient except perhaps for uses related to the video in very high resolutions etc .. .) A good adapter.