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Gigabit Network ConnectionThe Western Digital My Book World Edition II (model WDH2NC40000N) features a Gigabit Ethernet port for up to 10X the speed of most 100M network connections and excellent usability for office and home networks.
Huge 4TB Storage CapacityThe Western Digital My Book World Edition II (model WDH2NC40000N) provides an amazing 4TB storage capacity, so you can save your movies, music, applications and documents for easy sharing and even back up your system.
RAID Mirroring TechnologyThe built-in RAID mirroring technology, The Western Digital My Book World Edition II (model WDH2NC40000N) automatically and continuously maintains a second copy of your data, providing a double-safe space for your data.
USB 2.0 SupportThe Western Digital My Book World Edition II (model WDH2NC40000N) features a built-in USB 2.0 port for convenient storage capacity expansion with external storage devices.
Home Media Center with DLNA SupportConnect the Western Digital My Book World Edition II (model WDH2NC40000N) to any of your digital multimedia appliances supporting DLNA (Digital Living Network Alliance) and enjoy playback of digital files stored in your NAS effortlessly – watch movies, listen to music and view pictures without complicated setup!