Originally Posted by chocolate_boy
Because OS4 doesn't support USB 3.0. Hell, it only just got 2.0 support last year or so! It was 1.1 before that, so don't expect 3.0 any time soon.
And that's the timeframe to get support for open standards. ;-)
But is the hardware on the x5000 mobo only 2.0 or is the limitation in the OS? Usb3 controllers should not make a big difference in end price on this kind of.... exclusive... piece of hardware...