The acronym "USB" stands for Universal Serial Bus. It is a standard for connecting various devices, such as computers, printers, and external storage, enabling data transfer and power supply. USB has evolved through multiple versions—such as USB 2.0, 3.0, and the newest USB-C—each improving speed and connectivity options. USB ports are now ubiquitous in technology, contributing to the seamless integration of different devices and enhancing user experience through compatibility and versatility.