Data storage devices are physical components that store digital information. Common examples of data storage devices include hard disks, solid-state drives, optical discs, and USB flash drives. Hard disks are the most common type of data storage device, consisting of a spinning disk with magnetic material that stores data. Solid-state drives are non-volatile memory devices that use integrated circuit assemblies as memory to store data. Optical discs, such as CDs and DVDs, use laser technology to store data. USB flash drives are small, portable storage devices that use flash memory to store data. All of these data storage devices are used to store digital information, such as documents, photos, music, and videos.