This case protects the drive with a durable enclosure designed for style and protection. (There is NO HARD DRIVE INSIDE!) Maximum transfer rates. When connected to a USB 3.0 port WD your hard drive delivers maximum performance for data transfers. Transfer a full-length HD movie in a fraction of the time it takes with USB 2.0. USB 3.0 External Interface Fit with 2.5 inch SATAHDD/SSD No Drivers needed Plug & play Light Weight