Features overview of USB 3.0:
A new enhanced “SuperSpeed” data mode with 4.8Gbps raw transfer rate (nearly 10 times as fast as Hi-Speed USB 2.0)
It operates in full-duplex mode through the addition of four extra pairs of connections
Completely backward compatible with USB 2.0 – even with the changes in cabling, the plug and the receptacles will support this feature
Instead of broadcasting a device’s packet traffic to all other devices below the connecting host (like USB 2.0 does) it uses dedicated pipelining to each of the devices connected to the host system
A single bulk transfer pipe can manage multiple streams of data, in SuperSpeed streaming mode
An advanced power management feature that provides supports for power consumption as per a device’s demand; with sleep-mode
The voltage consumption is now 4V, down from 4.4V of USB 2.0, but the electric current limit is now significantly increased by 80% to 900mA, to produce 4.5W at maximum power utilization
A longer connector cable length will be supported. Although some speculate that at SuperSpeed mode, the cable length will have to be limited to 3 metres (comparable to eSATA)
PCIe 2.0 Architecture has been followed, and the signaling, encoding, equalization of data etc. are implemented the same way
