Mihaitaa, I'm calling shenanigans. How does the USB cable change the speed of the bits going across the wire? We already know the bits themselves make it intact over a "regular" USB cable or else we wouldn't be able to USB on a computer. The problem with Adaptive USB is that there's no guaranteed uniformity with the responsiveness of the USB hardware on either end (or the software controlling the USB hardware). Also the clocking used in the PC and the DACs that have to "adapt" come into play. That latter can't be helped. On an idle system the former is most likely not that big an issue. The cable is not the issue in any case unless it is defective.