USB 3.0 and 2.0??

From few days many of my frnds asked me that what is USB 3.0 and 2.0. It is the post that say abt the differ in versions

Ø  USB 3.0, the latest version of USB (Universal Serial Bus), provides better speed and more efficient power management than USB 2.0.
Ø  the USB 3.0 version is generally more expensive than it's USB 2.0 version
Ø  USB 2.0 will be in grey colour where 3.0 in blue colour
Ø  USB 2.0 offers transfer rates of 480 Mbps and USB 3.0 offers transfer rates of 4.8 Gbps - that's 10 times faster.
Ø  Instead of one-way communication, USB 3.0 uses two unidirectional data paths, one to receive data and the other to transmit while USB 2.0 can only handle only one direction of data at any time.
Ø  USB 3.0 is compatible with USB 2.0. However, the USB 3.0 product will perform at the same level as a USB 2.0 product, so speed and power benefits will not be fully realized.
Ø  USB 2.0 cables can be used with USB 3.0 devices, if at USB 2.0 speeds.


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