USB (Universal Serial Bus) is a global standard for data and power transfer between electronic devices. USB supports hot-swapping (plug-and-play) and multiple generations of speed: USB 1.1 (12 Mb/s), USB 2.0 (480 Mb/s), USB 3.x (up to 20 Gb/s), and USB4 (up to 40 Gb/s with Thunderbolt integration).
Connector types include USB-A, USB-B, microUSB, miniUSB, and the now-dominant USB-C, which supports high-speed data, video, and high-power charging (USB Power Delivery).
In display applications, USB is used for touch interfaces, DisplayLink-based video transfer, and powering small displays. Its universality, backward compatibility, and broad support make it indispensable in consumer, industrial, and embedded electronics.
