WD Red 4TB 2.5" SA500 NAS SATA SSD WDS400T1R0A - Total Capacity: 4TB - Form Factor: 2.5" - Interface: SATA 6Gb/s - SQL Read Speed: Up to 560 MB/s - SQL WRite Speed: Up to 530 MB/s - Random Read/Write: Up to 95/82K - Endurance: 2500 TBW - MTBF: Up to 2,000,000 Hours - WDS400T1R0A - 5 Years Limited Warranty Western Digital Red SA500 SSD 4TB 2.5'/ 7MM SATA 6 Gb/s, 560/530 R/W