Capacity: 4 TB, Type: M.2 2280, Bus Interface: NVMe PCIe Gen4 x4, Flash Type: 3D NAND flash, Sequential Read/Write (CrystalDiskMark): Up to 5,300/4,000 MB/s , 4K Random Read/Write (IOmeter): Up to 390,000/630,000 IOPS, TBW: 2400 TBW, MTBF: 2,000,000 hour(s), Warranty: 05 Years, TS4TMTE245S.