USB 1.1 is a standard for connecting devices to computers, introduced in 1998 as an improvement over the original USB 1.0. It allows for faster data transfer rates of up to 12 megabits per second, making it suitable for various peripherals like keyboards, mice, and printers. This version of USB supports both low-speed and full-speed devices, enhancing compatibility across a wide range of products. USB 1.1 played a crucial role in simplifying connections, allowing users to plug and unplug devices without needing to restart their computers.