OWC 1.0TB Hard Drive USB3.0 Upgrade Kit for Xbox One 1.0 TB External USB 3.0 Drive 1.0TB HGST Travelstar? 5K1000 Hard Disk Drive, 2.5" SATA 6Gb/s drive, 5,400 RPM, 8MB cache Add 2x the capacity to your Xbox Ultra-Easy Setup-Compact Portable Design 1 Year OWC Limited Warranty and 24/7 Customer Support