1TB internal SSD 2.5 inch WD Sequential Read Speeds up to 560MB/s Sequential Write Speeds up to 530MB/s. Broad Compatibility – With a certification from the WD Functional Integrity Testing Lab (F.I.T. Lab), every WD Blue SATA SSD is verified for compatibility with a wide range of desktop and laptop computers. High capacity with enhanced reliability – A WD Blue SATA SSD uses technology not only for higher capacities but also to help reduce cell-to-cell interference for enhanced reliability.