Normally, USB flash drive contains flash memory data storage device integrated with USB 1.1 and 2.0 interface used in electronic devices. It is important to know that the USB flash drive found to be typically removable and rewritable, quite smaller than the floppy disk with weight just an ounce. Also usb flash drive is known for storage capacities ranging from few megabytes to 256 GB with having changes in sizes along with price per capacity. Users of usb flash drive will find around 1 million writing and erasing cycles, and also having 10-year data retention in the world market. In the market, usb stand as universal serial bus drive in many devices with latest technologies. The usb flash drive appears quite smaller, faster, and reflecting thousands times larger capacity.

Generally, usb flash drive contains small printed circuit board with circuit elements and a USB connector, insulated electrically, and protected inside a plastic, metal,and rubberized case that could be carriable in a pocket with a key chain. Many users of usb flash drive are using a standard type-A USB connection permits plugging in the port on a personal computer,but users should know that there's a availability of drives for other interfaces in the world market. Buyers of USB flash drive should know that usually derive their power from the USB connection without the help of battery. Many devices which combine with the functionality of digital audio player with flash-drive-type storage needs a battery for performing the player function. Users should have relevant information about usb flash drive before selecting it for using in various electronic devices from the market.