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USB is also known as Universal Serial Bus.
USB 1.0 is the first version of USB, was released in 1996, carry the data rates of 1.5 Mbit/s (Low Bandwidth or Low Speed) and 12 Mbit/s (Full Speed)
USB 2.0 was released in April 2000, adding a higher data rates of 480 Mbit/s (60 MB/s named High Speed or High Bandwidth)
USB 3.0 was released in April 2008, the USB IF branding jumped to Super Speed 5Gbps, the data rate of 5Gbits/s, transfer speed is 500 MB/s; USB 3.1 also called USB 3.2 Gen 2, and data rate up to 10 Gbit/s, and the transfer speed up to 1.21GB/s; the higher version of USB3.0 is USB 3.2, the Gen 2x2, data rate up to 20Gbit/s Transfer speed up to 2.42GB/s
USB 4 which was released in 2019, it is based on Thunderbolt 3 protocol, supports 40Gbit/s throughput.
USB ports are also often used as power delivery connectors. Most portable device support the power charge by using USB cables.
USB 2.0 supports 100mA 5V power charging, the maximum power is 0.5W;
USB 3.0 supports low power of 150mA and high power of 900mA, the maximum power is 4.5W
This can explain why it is faster to charge your phone when using USB 3.0 port.
Standard USB ports also can be divided into Type A, Type B and Type C.
Compare to different versions, USB 2.0 and USB 3.0 are more often seen and widely used at computers, display devices and other data transport devices.
Below are some samples of USB 3.0 and USB 2.0 versions used in Mini PC models.
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