The USB device can Perform faster.!!! ..????

USB devices are used almost everywhere in the world today. and people have used to bring them anywhere they go. Actually its important like the wallet for me. I think it is same for most of u all, as people living in IT era. If you are using Microsoft windows,You may have experienced a popup message saying "the USB can perform faster". What does this mean?? 
    USB means Universal serial Bus. most probably there are at least 6 USB ports in a desktop computer. earlier versions of USB are called version 1.1 . and currently using version is 2.0 . The expected release is version 3.0. The difference between these three is the data transfer rate of each of them. version 1.1 supported only up to 12 Mbps. but version 2.0 supports for theoretically 480 Mbps transfer rate.if you carefully read that, actually it means a lot, 40 times faster than 1.1. and it is expected that 3.0 will support for 5Gbps which is 10X jump from the previous.(Actually it has already arrived in Asus and gigabyte motherboards)  
       one interesting aspect of USB is that it is totally OK to mix and match 1.1 and 2.0 . even 3.0 has the backward compatibility with 2.0. so let's dig into our exact topic. when you connect a USB 2.0 device to 1.1 USB port, windows will pop up "the device can perform faster..kinda message.". That means actually your device can transfer data in a rate of 480 Mbps, but the USB port in the computer, only allows up to 12 Mbps. As a result it will perform slower than actually it could. This is what is notified by that message. 

      The difference between 1.1 and 2.0 is in hardware. so installing a software like things can't be done to upgrade the speed . the alternative is using a USB add In card which is 2.0 and connect it with USB 1.1 interface of your computer.
 

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