A flash drive, also known as a USB drive or thumb drive, is a small, portable storage device that connects to computers and other devices via a USB (Universal Serial Bus) port. It uses flash memory to store data, making it a convenient option for transferring files, such as documents, photos, and videos, between devices. Flash drives come in various storage capacities, ranging from a few gigabytes to several terabytes. These devices are popular due to their compact size and ease of use. Users can simply plug a flash drive into a computer or compatible device, drag and drop files, and safely remove it when finished. Flash drives are also often used for backing up important data and can be easily carried in a pocket or on a keychain.