USB 2.0 vs. USB 3.0
Data Transfer Rate
What is USB 2.0
As an evolution of the USB 1.1, USB 2.0 is an external bus, also called as Hi-Speed USB, to support data rates with maximum 480Mbps speed. It is an extension and is completely compatible with USB 1.1 and utilizes the same threads and cables. USB 2.0 provides system manufacturers the potential to connect to high working efficiency peripherals in cheap way. Its attached features can be included with little impact to the whole system cost. It has complete forward and backward flexibility with original USB devices and functions with especially developed connectors.
What is USB 3.0
USB 3.0 is the third major version of USB (Universal Serial Bus) to interface computers and electronic devices. USB has efficient speed mode to transfer data at up to 5 Gbits. Its connectors and cables are usually different from the previous versions of the USB. This one is the much developed version of USB.