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Portable storage refers to any type of storage device that is designed to be easily transported from one location to another. These devices are typically small and lightweight, allowing users to carry their important files, documents, or media with them wherever they go. Portable storage devices can include USB flash drives, external hard drives, memory cards, and solid-state drives. These devices are often used to back up data, transfer files between computers, or expand storage capacity on devices such as laptops or smartphones.