USB, which is the abbreviation of English Universal Serial Bus, and its Chinese abbreviation is "Through String", is an external bus standard for regulating the connection and communication between computers and external devices. It is an interface technology applied in the PC field. The USB interface supports plug-and-play and hot-swap capabilities of the device. USB was jointly proposed by Intel, Compaq, IBM, Microsoft and other companies at the end of 1994.
Universal Serial Bus (USB) is a serial bus standard for connecting computer systems and external devices. It is also a technical specification for input and output interfaces, and is widely used in personal computers and mobile devices. Information and communication products, and extended to photographic equipment, digital TV (set-top boxes), game consoles and other related fields. The latest generation is USB 3.1, the transmission speed is 10Gbit/s, the three-stage voltage is 5V/12V/20V, and the maximum power supply is 100W. The new Type C plug-in is no longer positive and negative.
