http://en.wikipedia.org/wiki/Universal_Serial_Bus#USB_3.0
A new major feature is the SuperSpeed bus, which provides a fourth transfer mode at 4.8 Gbit/s. The raw throughput is 4 Gbit/s, and the specification considers it reasonable to achieve 3.2 Gbit/s or more after protocol overhead.
Got Bandwidth?
This may also do in SATA.
SATA (eSata) helped do in FW; USB 3.0 if broadly accepted (no reason it won’t comes to mind) will rule.