"ThinkPad 512GB SAMSUNG PCIe NVME TLC OPAL M.2 SSD supporting PCIe 3.0 interface standard up to 4 lanes shows much faster performance than previous SATA SSDs. It's sequential performance is up to 300MB/s for read operation and 1700MB/s for write operation by 4 lanes. Test-Prove 100% Compatible with ThinkPad machines. "