The LinkStation 520DN is a populated network attached storage device (NAS) made specifically for the home. The LS520DN is a customizable NAS solution designed to serve as the hub of a user's connected home by making it easier to store, share, and secure all digital data for the modern family. You will enjoy the system's intuitive and easy to use graphical user interface. The LS520DN is powerful enough to stream four high definition movies simultaneously while also backing up multiple computers. This is the perfect device for the film buff, music fan, and family photo collector with the ability to access files anywhere with Internet connection.