USB Flash drives
USB Flash drives are small, compact, portable data storage devices. Since the introduction of USB 2.0, USB memory sticks have a very fast data transfer rate, and since are solid state, with no moving parts, they are extremely reliable and durable.
With USB ports being standard on all computers nowadays and compatible with all the major operating systems, USB Flash drives and USB memory sticks are extremely convenient for both storing and transferring data. They are only active when connected to a USB connection and when connected draw all necessary power from the supply provided by that connection.