SSD Samsung NVMe SM951 128GB M.2 PCIe 3.0, 2000/650MBs, IOPS 300k/83K M.2 Interface: PCIe 3.0 x4 lanes, up to 32Gb/s 256MB LPDDR2 DRAM Buffer Memory Supports Standard NVMe driver, APM and L1.2 Power Saving Mode, End-to-End Data Protection, Support TRIM Command, RoHS Compliant, Halogen-Free Compliance Sequential Read: 2000MB/s, Sequential Write: 650 MB/s, Random Read (QD=4): 300K IOPS, Random Write (QD=4): 83K IOPS Works with most motherboards and notebooks with a compatible M.2 PCIe interface slot. Includes Z97/X99/Z120 motherboards. Not compatible with the MacBook, MacBook Air, MacBook Pro, or Mac Pro (see description for details)