WD Black SN850 WDS500G1X0E 500GB NVMe M.2 PCIe Gen4 SSD – Without Heatsink – Heatsink NOT Included – Interface: PCIe Gen 4 x4 – Capacity: 500GB – Sequential Read: 7000MB/s – Sequential Write: 4100MB/s – Endurance (TBW): 300 – Backwards compatible with PCIe Gen3 x2/Gen3 x1/Gen2 x4/Gen2 x2/ Gen2 x1 – WDS500G1X0E – 5 Years Limited Warranty