M.2 NVMe SSD 1.0TB GOODRAM PX500 Gen2, Interface: PCIe3.0 x4 / NVMe1.3, M2 Type 2280 form factor, Sequential Reads/Writes 2050 MB/s/ 1650 MB/s, Random (4k QD64) Read/Write 171K IOPS/ 143K IOPS, SMI 2263XT, TBW: 660TB, 3D NAND TLC, heat-dissipating thermal pad