My Cloud Mirror 2-bay personal cloud storage keeps all your photos, videos and files twice as safe, at home and completely under your control, and lets you access them anytime from computers, tablets and smartphones. Centralized, whole-home storage and anywhere access with smartphones and tablets - automatically creates a duplicate copy of all your content onto the second drive - automatic backup for all your computers, and photos and videos on your mobile devices. Storage space 4TB: GB307 hours of video, 750000 MP3s, 800000 photos, 307 Divx movies. USB 2.0. USB 3.0. Weight 1.66kg. Size H17.1, W9.9, L15.4cm. Manufacturers 2 year guarantee.