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An external hard drive is a portable data storage device that connects to computers and other electronic devices via USB, FireWire, or Thunderbolt ports. They are designed to complement internal hard drives by providing additional storage capacity and flexibility. External hard drives are commonly used for backing up files, transferring data between computers, and expanding the storage capabilities of laptops and desktop computers. These devices are considered computer peripherals, but they can also be used with video game consoles and other electronics to store games, save files, and media content. They offer a convenient solution for managing digital assets, offering users peace of mind and ensuring their important data is safe and accessible whenever needed.