As technology innovation marches forward， new kinds of devices， media formats， and large inexpensive storage are converging. They require significantly more bus bandwidth to maintain the interactive experience users have come to expect. In addition， user applications demand a higher performance connection between the PC and these increasingly sophisticated peripherals. USB 3.0 addresses this need by adding an even higher transfer rate to match these new usages and devices USB continues to be the answer to connectivity for PC， Consumer Electronics， andMobile architectures. It is a fast， bidirectional， low-cost， dynamically attachable interface that is consistent with the requirements of the PC platforms of today and tomorrow.