Samsung XP941 512GB AHCI M.2 80mm PCIe 2.0 x4 SSD - MZHPU512HCGL - OEM 512MB LPDDR2 DRAM Buffer Memory Works with most Z97 and X99 motherboards and Mac Pro models. Not compatible with the MacBook Air, Retina MacBook Pro or Cylindrical Mac Pro M.2 Interface: PCIe Gen2 5Gb/s, up to 4 lanes 3 Year Warranty, Support Standard AHCI driver, Support Toggle2.0 interface, End-to-End Data Protection, Support TRIM Command, RoHS Compliant, Halogen-Free Compliance Sequential Read: 1170MB/s, Sequential Write: 930 MB/s, Random Read (QD=32): 122K IOPS, Random Write (QD=32): 72K IOPS