High Capacity In A Compact Design The compact design offers up to 18TB capacity, making WD Elements desktop storage the ideal solution for easy, add-on storage of all your important photos, music, videos and files. Improve PC Performance When your internal hard drive is almost full your PC slows down. Don’t delete files. Free up space on your internal hard drive by transferring files to your WD Elements desktop storage and get your computer moving again. Plug-And-Play Simplicity Works Right Out Of The Box With Windows® PC. Just Plug Into The USB Port To Instantly Add Storage.