**USB** stands for Universal Serial Bus, a standardized connection interface used for communication and power supply between devices. It allows for seamless data transfer between computers, peripherals, and other devices. USB has evolved through multiple versions, increasing data transfer speeds and supporting a variety of devices, from storage drives to printers. Its significance lies in its widespread use and adaptability, making it essential for connecting devices in both personal and professional settings. USB has become a fundamental aspect of modern computing and electronic device interconnectivity.