USB is used to connect peripherals to a computer. The most commonly used port. It is used keyboard, computer, mobile, scanner, printer…etc, Making onestandard connector. Making connected devices easier to configure.Provide fast transfor rates. Day by day the USB design and its capabilities have been enhanced. Starting with the old USB, the current speed of the current USB is given below.

USB 1.0- 1.5 Mbits/s

USB 1.1- 12 Mbits/s

USB 2.0- 480 Mbits/s

USB 3.1- 10 Gbits/s

USB 3.2- 20 Gbits/s

USB 4- 40 Gbits/s

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