The 4 TB Western Digital My Book Live Duo Wireless External Network Hard Drive gives you doubly-safe data storage which you can access and enjoy anywhere.Personal cloud driveNow you can enjoy dual-drive shared storage on your home network, to access wirelessly from other computers, tablets, smartphones and connected devices.Create your own personal cloud without the hassle of monthly fees or undefined data location. Store media and files for secure internet access, or access them on your smartphone and tablet using WD's mobile apps. You're effectively giving your mobile device another 4 TB of extra storage.It also offers uncompromised speed with its built-in, high-powered 800 MHz CPU, suited to the most demanding applications and best-in-class read speeds. Faster than conventional USB 2.0 drives, the My Book Live Duo streams media and transfers files without missing a beat.Home wireless sharing with auto-backupThe 4 TB Western Digital My Book Live Duo Network Hard Drive is the ideal dual-drive solution for consolidating and sharing data on your wired or wireless home network. Connect it to your wireless router to access and share files with any PC or Mac computer on your network.You'll benefit from automatic, wireless backup for all your computers � WD SmartWare™ lets you wirelessly back up all your computers to one dependable location, protecting those precious memories.So whenever you save something, it's backed up right away. If you use a Mac, you can utilize all the features of Apple Time Machine� backup software to protect your data.Extra-safe network storageCompatible with Windows and Mac devices, the WD My Book Live Duo allows you to stream media to your entertainment centre and access files remotely via apps for mobile devices. A secure connection is ensured by RAID 1 technology, giving you double-safe backup for your data.When the drive is set to data protection mode (mirrored mode or RAID 1), its capacity is divided in half. One side is used to store your data and the other is used for duplicate copies, so in the unlikely situation of a drive failure, your data is protected by its duplicate on the other drive.You'll be granted maximum storage capacity as this two-drive system combines both drives in one large volume out of the box.Best hard drive for entertainmentThe 4 TB Western Digital My Book Live Duo Wireless Hard Drive is DLNA 1.5 and UPnP™-certified to facilitate streaming to your HDTV.Watch home movies or photo slideshows, or stream music, photos and videos via the built-in media server to any DLNA-certified device such as a WD TV� Live™ network media player, Blu-ray Disc player, Xbox� 360, PlayStation� 3 and connected TV. With iTunes server support, the drive also lets you centralise your music and video collection to stream to any PC or Mac with iTunes.Straightforward expandable hard driveThe 4 TB WD My Book Live Duo External Network Hard Drive is a snap to set up and locate on your network. It will be found automatically in seconds on your Mac, Windows 8, Windows 7 or Windows Vista computer. Windows XP teams with WD's simple discovery software for easier drive setup.If you want to upgrade the drive, just open the case and replace the existing drive � you won't even need a screwdriver. Automatically make a second copy of the hard drive on another My Book Live Duo or NAS drive on your home network for extra safe protection and ultimate peace of mind.The USB expansion port allows you to turn any USB 2.0 drive into an instant network drive for enhanced capacity on your WD My Book Live Duo. Simply connect the drive to the USB port to automatically share it on your network.Combining storage space, security, entertainment and convenience, the 4 TB Western Digital My Book Live Duo Wireless External Network Hard Drive is a truly comprehensive home data solution.____________________________________________Please note: Upgraded drives must be equal in size to utilize the full capacity (e.g., Two 2 TB drives or two 3 TB drives).

WD My Book Live Duo Wireless External Network Hard Drive - 4 TB, Black