The 3-6TB My Book Desktop HDD from Western Digital features a 3-6TB 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 5 Gb/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.