USB ports (Port) or a way to connect and communicate between computers and external devices such as printers (Printer) Mouse (Mouse) Keyboard (Keyboard) digital camera, smart phone and tablet air. card (Aircard) modem (modem) scanner (scanner) species, including equipment and machine tools of modern virtually all it held that the USB port is a channel of communication between the computer and external devices, the most important and most popular.
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USB (USB reads) stands for Universal serial bus, a standard definition of the serial communication bus. In order to connect to the device. Which is typically used with computers. It can be used with other devices, such as desktop box set (set-top boxes), game (game consoles) and PDAs (PDAs) - Wikipedia
USB has been developed since 1996 and began adoption. was used in a commercial version of USB 1.1, which has evolved to a higher speed. By changing the version of the USB 2.0 and 3.0, respectively, by the speed of data transmission higher as
USB 1.1 is the speed of data transfer 12 Mbps
USB 2.0 speed data transfer 480 Mbps higher than USB 1.1 40 times
USB. 3.0 with data transfer speeds of 5 Gbps USB 2.0 10 times higher.
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