USB 3.0 is the second major revision of the Universal Serial Bus (USB) standard for computer connectivity. USB 3.0 has transmission speeds of up to 5 Gbit/s, which is 10 times faster than USB 2.0 (480 Mbit/s) before taking into account that USB 3.0 is full duplex whereas USB 2.0 is half duplex, giving USB 3.0 the potential total bandwidth if utilized both ways to 20 times that of USB 2.0.
- Transfer speed – Added a new transfer type called Super Speed or SS – 5 Gbit/s (electrically it is more similar to PCIe Gen2 and SATA than USB 2.0)[3]
- Increased bandwidth – Instead of one-way communication, USB 3.0 uses two unidirectional data paths: one to receive data and the other to transmit
- Power management – U0 through U3 link power management states are defined
- Improved bus utilization – a new feature is added (using packets NRDY and ERDY) to let a device asynchronously notify the host of its readiness (no need of polling)
- Support to rotating media – Bulk protocol is updated with a new feature called Stream Protocol that allows a large number of logical streams within an Endpoint
Comparing USB Types
- See our line of OEM USB 3.0 Cameras
http://www.oemcameras.com/enclosed-cameras/enclosed-digital-usb-3-cameras
- For more in-depth information on USB 3.0 see our sources below:
http://blog.macsales.com/14399-usb-3-0-brings-a-newish-plug
http://en.wikipedia.org/wiki/USB_3.0