A flash drive is a small, portable storage device that uses flash memory to save and transfer data. It connects to computers and other devices through a USB port, making it easy to move files like documents, photos, and videos. Flash drives come in various storage capacities, ranging from a few gigabytes to several terabytes. These devices are popular for their convenience and durability. Unlike traditional hard drives, flash drives have no moving parts, which makes them less prone to damage. They are widely used for backing up important data, sharing files, and transferring information between different devices.