Tech Specs Solid  State Drives Transcend SSD452K series 2TB 2.5" SATA 6Gb/s high endurance Solid State Drive, 96 layer 3D TLC NAND Flash Memory, 7mm, DDR3 DRAM Cache, LDPC ECC with TRIM and NCQ support, 560 MB/s Sequential read speed, 520 MB/s Sequential write speed, 90 000 IOPS 4K random read