The shape of the flash drive is designed according to main functions of this device: collecting, accumulating and acquiring information. The curvature of the flash drive’s case also makes it easier to disconnect the flash drive from the computer’s USB port.
A little display located on the flash drive’s case shows the volume of data already stored on the drive. Depending on how the flash drive is programmed, this information may be shown as a percentage of total storage capacity, or in megabytes used; also, certain symbols or writings may be displayed there.
The way of presentation of the displayed information may be changed using the menu activated when the flash drive is turned on. Source
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