WD Black PCIe SN500 Blue 500MB NVMe SSD Western Digital WD Blue SN500 NVMe M.2 2280 500GB PCI-Express 3.0 x2 3D NAND (SSD), Sequential read speeds up to 1700 MB/s and sequential write speeds up to 1450 MB/s [WDS500G1B0C], 5Yr Warranty