USB stands for Universal Serial Bus, translated as Universal Serial Bus. It is a serial bus standard that connects computer systems and external devices. It is also a technical specification for input and output interfaces. It is widely used in personal computers and mobile devices. Communication products, and expanded to other related fields such as photographic equipment, digital TV (set-top boxes), game consoles and so on.
As the IT industry continues to progress, USB has gone through the following stages:
USB1.0: 1.5Mbps (192KB / s) low-speed (Low-Speed) 500mA, January 1996;
USB1.1: 12Mbps (1.5MB / s) Full-Speed 500mA, September 1998;
USB2.0: 480Mbps (60MB / s) high-speed (High-Speed) 500mA, April 2000;
USB3.0: 5Gbps (640MB / s) Super-Speed 900mA, November 2008;
USB3.1: 10Gbps (1.25GB / s) SuperSpeed Plus (SuperSpeed +) 5A, December 2013.
The latest generation of USB 3.1 Gen2, the transmission speed is 10Gbit / s, the three-stage voltage is 5V / 12V / 20V, and the maximum power supply is 100W.
The USB Type C interface that accompanies USB3.1: USB Type C has a trend of unified consumer electronics interfaces, and has recently occupied the top of the flagship mobile phone interface of major brands.