浏览次数：1957次 发布日期：2021-12-09

 USB 2.0 is 500mA USB 3.0, and the maximum energy is 1A multiplied by the Voltage 5V USB2 The power of USB3.0 is 2.5W The power of 0 is 5W.  
 
USB is the abbreviation of universal serial bus interface. It is one of the widely used computer interfaces. The main versions are 1.0, 1.1 and the latest 2.0. According to the industrial standard of USB bus, it can provide power supply with rated power of 5V / 500mA for USB devices.