|Released ||April 2000
|Speed ||High Speed or HS, 480 Mbps (Megabits per second)
||10 times faster than USB 2.0. Super Speed or SS, 4.8 Gbps (Giga bits per second)
|Signaling Method ||Polling mechanism i.e can either send or receive data (Half duplex)
||Asynchronous mechanism i.e. can send and receive data simultaneously (Full duplex)
|Price ||For a similar product, the USB 2.0 version is generally less expensive than its USB 3.0 version.
||For a similar product, the USB 3.0 version is generally more expensive than its USB 2.0 version.
|Max Cable length ||5 meters
|Power Usage ||Up to 500 mA
||Up to 900 mA. Allows better power efficiency with less power for idle states. Can power more devices from one hub.
|Number of wires within the cable ||4
|Standard-A Connectors ||Grey in color
||Blue in color
|Standard-B Connectors ||Smaller in size
||Extra space for more wires