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