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 often used for backup purposes, file sharing, and transferring data between different systems. Unlike traditional hard drives, flash drives have no moving parts, which makes them more durable and less prone to mechanical failure. They are also lightweight and convenient for everyday use.