while looking for a 2.0 hub to gain a few USB inputs I came across USB 3.0 expresscards. I was looking to not waste $45 on newegg and thought I'd stop in and get some advice before buying one impulsively. I was wondering if anyone could tell me if the add-on card would benefit file transfer rates of USB 2.0 ext Hdd's and other similar devices? The way I understand it is the 3.0 is backwards compatible with 2.0 but if you use 2.0 cables then you get 2.0 speeds, is this correct? If so then if I used 3.0 cables on a 2.0 devices and the 3.0 USB expresscard would I gain the benefits of the 3.0 interface? Is the expresscard going to bottleneck the idea or will this be a worthy purchase just to have the 3.0 option over just buying a a 2.0 expresscard for added USB's? Why do some usb 3.0 expresscard require the usb pigtail for 5v power while some do not? Lastly, Drivers.. Is win7 x64 ready for 3.0? Thanks for sharing your knowledge/advice.