Corsair Flash Readout USB drives are designed with user friendliness in mind. Each Flash Readout USB drive has a built in display to show capacity used, free capacity and a personal ID/label. The Bi-stable Cholesteric Display (BCD) retains and displays this information for up to one year without the use of a battery! An 11 character alphanumeric label can be personalized to help you identify the contents. Free storage capacity is shown with a 4 digit display and used space is indicated by a pie chart. Flash Readout drives are High Speed USB 2.0 and backwards compatible with USB 1.1, include a USB extension cable and lanyard.