NexStar DX converts 5.25" desktop optical drive to an external enclosure. The internal old optical drive became a portable USB 3.0 enclosure that fits with desktops or laptops. This enclosure supports read/write optical drive like Blu-Ray drive, CD and DVD. The aluminum case keeps the device cool and operating at optimum conditions. The NexStar DX external 5.25" enclosure is the smart way to optimize and share your optical drive with all your system.