A USB flash drive is a small, portable storage device that connects to computers and other devices via a USB (Universal Serial Bus) port. It is used to store and transfer data, such as documents, photos, and videos. Flash drives are available in various storage capacities, ranging from a few gigabytes to several terabytes, making them versatile for different needs. These devices are known for their durability and ease of use. Unlike traditional hard drives, USB flash drives have no moving parts, which makes them less prone to damage. They are commonly used for backing up important files, sharing data, and transferring information between devices.