USB 3.0 "SuperSpeed USB"

                        USB 3.0 promises to increase performance by a factor of 10, pushing the theoretical maximum throughput of the connector all the way up to 4.8 gigabits per second. USB 3.0 can read and write data simultaneously. This is achieved by adding two new lanes dedicated to transmit SuperSpeed data and another pair for receiving it.

       USB 3.0 cable contains nine wires (four more than a USB 2.0 cable); eight carry data and one is used as a ground. There will be a big difference in performance however, USB 2.0 is like a single-lane country road that needs to handle the morning-commute traffic in and out. There are jams and slowdowns when too much data is going back and forth. With nine wires available, USB 3.0 has an additional two lanes of traffic in each direction to smooth the flow between the computer and the device.

       USB 3.0 has also increased the amount of current that a downstream USB Device can draw from a PC.This limit is raised from USB 2.0's 500mA to USB 3.0’s 900mA, which translates into an 80% increase in available power. it allows mobile handhelds to charge their batteries faster.  For example, to fully charge a drained 1400mAh battery with an assumed 90% efficiency would take over 3 hours with a USB 2.0 Host,  but only 1.5 hour with USB 3.0.