With a removable cap and loop attachment, the flash drive is a great giveaway item at events and expos. The USB 3.0 connector is easily distinguishable from the 2.0 connector by the blue color-coding of the receptacles and plugs. The USB 3.0 may be plugged into a 2.0 port, however, only 2.0 transfer speeds will be achieved. To realize the benefits, you must have 3.0 ports on the device you are plugging the flash drive into.