This drive dramatically improves the responsiveness of your existing system with incredible boot, load and transfer times compared to mechanical hard drives. Capacity : 256GB Connection : SATA III 6Gb/s Size : M.2 Read speed (MB/s) : 1700 Write speed (MB/s) : 1100 MTBF (hours) : 1,500,000 Packaging : Stand-Alone drive Additional Interface : PCI-Express 3.0 x4, NVMe 1.3 TRIM & SMART supported Form Factor : M.2 2280 Warranty (months) : 36