The WD My Cloud EX2 Ultra is a NAS with extensive data protection to safely store your files. With the free My Cloud app for Android and iOS you can view and store your files wherever you are. Do you have an extensive collection of movies and series? Download the Plex app and watch your media on your TV, smartphone, tablet, or laptop. The NAS automatically shuts off when you're not using it. Expand the storage capacity by connecting an external hard drive or USB flash drive via USB.