Tech Specs Solid State Drives Transcend MTE220 Series 512GB M.2 2280 PCIe Gen3 x4 SSD - NVMe Supported - 3D TLC NAND Flash Memory - 80mm x 22mm x 3.58mm - Max Seq. R/W: 3500MB/s, 2800MB/s - DRAM & SLC Cache - LDPC coding