SAMSUNG SM951 MZHPV256HDGL M.2 256GB Internal Solid State Drive (SSD) M.2 Interface: PCIe 3.0 x4 lanes, up to 32Gb/s Sequential Read: 2150MB/s, Sequential Write: 1500 MB/s, Random Read (QD=4): 90K IOPS, Random Write (QD=4): 70K IOPS 512MB LPDDR2 DRAM Buffer Memory Works with most motherboards and notebooks with a compatible M.2 PCIe interface slot. Includes Z97 and X99 motherboards and pre-cylindrical Mac Pro. IMPORTANT NOTE: NOT Compatible with the MacBook, MacBook Air or MacBook Pro Supports Standard AHCI driver, APM and L1.2 Power Saving Mode, End-to-End Data Protection, Supports TRIM Command, RoHS Compliant, Halogen-Free Compliant