The main difference between 2.0 and 3.0 technology is the
data transfer speed. With the promotional USB 3.0 you can
copy, save or share files at a speed 10 times faster than the
normal advertising USB 2.0, which can transfer data up to 480 Mbps.
Therefore, 3.0 technology offers concrete benefits in terms of
performance, without compatibility issues because they are also
accessible to USB 2.0 ports. However, the transfer speed of custom
3.0 pen drives is guaranteed only if the input port of the device
where it is connected supports 3.0 technology.