The Universal Serial Bus (USB) is a widely adopted interface standard that allows communication between devices and a host controller, like a computer. Introduced in the 1990s, USB simplified the connection of peripherals such as keyboards, mice, printers, and storage devices. It eliminated the need for multiple types of connectors and offered plug-and-play functionality, allowing users to connect and disconnect devices without restarting their system. Over time, USB has evolved from USB 1.0 to USB 4.0, offering faster data transfer speeds and greater power delivery. It is now a ubiquitous feature of modern devices.