Samsung XP941 128GB AHCI M.2 80mm PCIe 2.0 x4 SSD MZHPU128HCGM - OEM M.2 Interface: PCIe Gen2 5Gb/s, up to 4 lanes 256MB LPDDR2 DRAM Buffer Memory 3 Year Warranty, Support Standard AHCI driver, Support Toggle 2.0 interface, End-to-End Data Protection, Support TRIM Command, RoHS Compliant, Halogen-Free Compliance Sequential Read: 1000MB/s, Sequential Write: 450 MB/s, Random Read (QD=32): 110K IOPS, Random Write (QD=32): 40K IOPS Works with most Z97 and X99 motherboards and Mac Pro. Not compatible with the MacBook Air or Retina MacBook Pro