Portable storage devices are compact tools used to store and transfer data. Common examples include USB flash drives, external hard drives, and SD cards. These devices connect to computers and other electronics, allowing users to easily move files, photos, and videos between different devices. These storage solutions are popular due to their convenience and capacity. Many portable storage devices are lightweight and can hold large amounts of data, making them ideal for backing up important information or sharing files with others. They are compatible with various operating systems, enhancing their versatility for everyday use.