For +/- prices can be found on USB 3, the box is very small and it is difficult to insert the hard drive (the small legs of the rear interfere). The circuit is basic and average finish. I have managed to test the speed, as I received it with a printed circuit oxidized. For benefits, it's small, aluminum casing and well presented, complete in the box with screwdriver. I was paid and the price difference, I'll buy a USB 3.