How much do you know about the interface of USB connectors

USB stands for Universal Serial Bus, also known as Universal Serial Bus in Chinese. A way to interconnect electronic products. Applied to various fields such as mobile, audio-visual, automotive electronics, multimedia, electrical appliances, etc. It has been widely adopted in various external devices. There are three types of USB interfaces: USB1.1 and USB2.0, usb3.0。 In theory, the transfer speed of USB1.1 can reach 12Mbps/s, while USB2.0 can reach a speed of 480Mbps/s and is backward compatible with USB1.1. The USB 3.0 transmission rate is approximately 3.2Gbps (i.e. 320MB/S). The theoretical maximum speed is 5.0Gbps (i.e. 500MB/S).

USB uses a 4-pin plug as the standard plug. Through this standard plug, all peripherals can be connected in a daisy chain format without losing bandwidth. The USB standard divides USB into five parts: controller, controller driver, USB chip driver, USB device, and customer driver for different USB devices.