USB. 2.0 Guide
USB 2.0 is a Universal Serial Bus (USB) standard. Almost all devices with USB capabilities, and nearly all USB cables, support at least USB 2.0.
Devices that adhere to the USB 2.0 standard have the ability to transmit data at a maximum speed of 480 Mbps. This is faster than the older USB 1.1 standard and much slower than the newer USB 3.0 standard