USB pinout diagram @ pinouts Pinout of USB and layout of 4 pin USB A or USB B plug connector and 4 pin USB A / USB B / mini-USB jack connectorUSB (Universal Serial Bus) designed to connect peripherals such as mice, keyboards, scanners, digital cameras, printers, hard disks, and networking components to PC. It has become the standard connection method for wide variety of devices.195/223(223) USB pinout, wiring and how it works! - Electroschematics The easiest way to connect computer peripherals is through a Universal Serial Bus. The USB is a plug-and-play interface between the PC and the. X. Top 10 Articles. USB – How it Works. Your USB wire/color image is INCORRECT! D+ and D- should be reversed.