hmm, I have a Z68 mobo with usb 3.0 i/o ports. Is that not native usb 3.0?
I guess it is possible for your motherboard to have a USB 3.0 controller on the MB. The Intel Z68 does not natively support USB 3.0. When I bought my MB (Asus), there were 2 models, almost identical but one with an on the MB USB 3.0 header and one without (so check the manufacturer website or your MB box if you still have it to see if there was a 19 pin USB 3.0 header on the MB). I went with the one without because based on the deals going, price different was over $80.