USB flash drive
A USB flash drive consists of a NAND-type flash memory data storage device integrated with a USB (universal serial bus) interface. USB flash drives are typically removable and rewritable, much smaller than a floppy disk (1 to 4 inches or 2.5 to 10 cm), and most USB flash drives weigh less than an ounce [1]. Storage capacities typically range from 64 MB to 64 GB[2] with steady improvements in size and price per gigabyte. Some allow 1 million write or erase cycles[3][4] and have 10-year data retention,[5] connected by USB 1.1 or USB 2.0. USB flash drives offer potential advantages over other portable storage devices, particularly the floppy disk. They have a more compact shape, operate faster, hold much more data, have a more durable design, and operate more reliably due to their lack of moving parts. Additionally, it has become increasingly common for computers to be sold without floppy disk drives.
