An External Blu-ray Drive is a device that allows users to read and write data on Blu-ray discs from a computer or laptop. Unlike internal drives, these are portable and connect via USB, making them easy to use with various devices. They are ideal for playing high-definition movies, backing up data, or transferring large files. These drives support multiple disc formats, including CDs, DVDs, and Blu-ray discs, providing versatility for different media types. Many external Blu-ray drives also come with software for playback and burning, enhancing the user experience for both entertainment and data management.