What's a flash drive?

Flash disk is a micro high capacity mobile storage product that uses USB interface without physical drive, and it uses Flash Memory as the storage medium. Flash drive does not require an additional drive, the drive and storage media are combined into one, as long as the USB interface on the computer can be independently stored read and write data. The flash drive is small, only about the size of a thumb, extremely light weight, about 20 grams, especially suitable for carrying.