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Transfer SpeedsUSB defines four different transfer speeds. The transfer speed is a device property. If a device identifies itself as being Full-Speed, for example, all of its endpoints will transfer data at Full-Speed. Low-Speed devices transfer data at 1.5 megabits per seconds. This transfer speed is typically used by keyboards, mice, game controllers and other devices with low throughput requirements. Full-Speed devices transfer data at 12 megabits per seconds. This is the highest transfer rate supported by USB 1.1. Older flash disks and audio equipment are typical Full-Speed devices. High-Speed devices transfer data at 480 megabits per seconds, which was introduced with USB 2.0. USB memory sticks, Fast-Ethernet networking devices, and video equipment are examples of High-Speed devices. SuperSpeed devices transfer data at up to 5 gigabits per seconds, which was introduced with USB 3.0. High performance disks, Gigabit-Ethernet networking devices, and video equipment are examples of SuperSpeed devices. SuperSpeedPlus devices transfer data at up to 10 gigabits per seconds, which was introduced with USB 3.1. Gigabit-Ethernet networking devices are examples of SuperSpeedPlus devices.
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