M.2 NVMe SSD 512GB GOODRAM PX500 Gen2, Interface: PCIe3.0 x4 / NVMe1.3, M2 Type 2280 form factor, Sequential Reads/Writes 2000 MB/s/ 1600 MB/s, Random (4k QD64) Read/Write 173K IOPS/ 140K IOPS, SMI 2263XT, TBW: 330TB, 3D NAND TLC, heat-dissipating thermal pad