SanDisk is a large American manufacturer of USB drives. There are different series of SanDisk USB drives, from small and compact to superfast ones. A SanDisk USB drive is available in various storage capacities and with additional functionalities such as security and shock resistance. There are also models that you can easily attach to a key ring. Useful if you want to take the USB drive to friends or family to show holiday photos. Or take a PowerPoint presentation to school or work.