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U disk, full name USB flash disk, is a miniature high-capacity mobile storage product that uses a USB interface without a physical drive. It is connected to a computer through the USB interface to achieve plug and play.
The universal serial bus is a serial bus standard that connects computer systems with external devices. It is also a technical specification of input and output interfaces. It is widely used in information communication products such as personal computers and mobile devices.
USB 3.0, a new generation of USB interface, is characterized by a very fast transfer rate, which can theoretically reach 5Gbps, which is 10 times faster than USB 2.0. The appearance is basically the same as the ordinary USB interface, and it is compatible with USB 2.0 and USB 1.1 devices.
It is mainly applied to the connection between various devices or mobile devices, that is, to realize data transmission between devices without a PC.