Western Digital Black Desktop 4TB 3.5” SATA Internal HDD Key Features 4TB Internal HDD 7200 rpm Rotation Speed Compatible with Windows and Mac SATA 3 Interface 5-Year Limited Warranty Overview For the creators, the gamers and those that demand the best, WD has delivered the next generation of hard drives to enlarge your PC playground. The latest WD Black hard drives offer enhanced features that maximize system performance, allowing you to spend more time doing what you love most with less waiting time. WD Black 4TB is designed to intensify your PC experience with generous capacity and incredible performance, pushing the boundaries of personalisation. Specifications Disk Type HDD External? No Capacity 4TB Rotation Speed 7200 rpm Cache 256MB Transfer Rate up to 202MB/s Interface SATA 3 Compatibility Windows, Mac Dimensions 147 x 102 x 26 mm