he 4TB My Book Desktop HDD from Western Digital features a 4TB storage capacity perfect for storing a variety of files including HD video, movies, music, photos and more. Simply plug in your drive to a compatible USB 3.0 port and begin transferring data at speeds up to 5Gb/s. Once your data is loaded to the drive you can rest assured your data is secure as this hard drive supports both password protection and hardware encryption. You can also backup your data from the Western Digital My Book HDD to the cloud through your Dropbox account. With Western Digital's Windows 8 app you can access all of your files quickly and efficiently. Additionally, this drive comes preformatted to work with Windows 7, Vista and XP and can be reformatted to work with the Mac OS X operating system. Up to 3x Faster Transfer Rates My Book desktop storage is optimized for to provide enhanced data transfer rates. Connect this drive to a SuperSpeed USB 3.0 port to access and save files up to 3x faster than with USB 2.0. Universal Connectivity With this drive you get compatibility with many of the latest USB 3.0 devices and backwards compatibility with USB 2.0 devices as well.