Which USB standard is known as Hi-Speed USB?

The designation "Hi-Speed USB" refers specifically to USB 2.0, which significantly increased the data transfer rates compared to its predecessor, USB 1.1. USB 2.0 offers a maximum theoretical transfer rate of 480 Mbps, making it a major improvement that supports more demanding applications such as video streaming and large file transfers. This standard also maintained compatibility with earlier versions, allowing for seamless integration into existing systems.

Other standards, such as USB 3.0 and USB 3.1 Gen 1, are often referred to with their respective terms reflecting even higher speeds, including SuperSpeed, which supports much faster data transfer rates. However, these terms are used to distinctly identify the capabilities of advanced USB standards beyond the Hi-Speed classification of USB 2.0.