Take your content on the go and enjoy convenient multimedia storing options with the sleek and stylish My Book Desktop External Hard Drive from WD. The compact and ready-to-use hard drive transfers videos, music, pictures and more with auto back-up and Apple Time Machine compatibility. Works great with Acronis® True Image™ WD Edition software. Drive Features USB version: 3.0 Storage capacity: 8TB Security features included: Yes Compatible with: Windows® 10, Windows 8, Windows 7, Mac OS X El Capitan, Yosemite or Mavericks Dimensions: 170mm x 139.3mm x 49mm