What is the meaning of USB? USB stands for "Universal Serial Bus". It is the standard connector or wire for a variety of peripherals which can be easily plugged into the computer (keyboard, mouse, printer, flash drive, video, wireless access, microphone, USB hub) to transfer data, data transfer and data transfer control signals, audio, and other types of digital data (from software sources). USB is a protocol for data transmission through the wire.
So, a USB cable is connected to a computer to act as a connection to different things
USB A, USB C, Mini B Micro connectors and drawings please download here