M.2 NVMe SSD 1.0TB GOODRAM IRDM w/Heatsink, Interface: PCIe3.0 x4 / NVMe1.3, M2 Type 2280 form factor, Sequential Reads/Writes 3200 MB/s/ 3000 MB/s, Random 4K Read/Write 255K IOPS/ 500K IOPS, 8-Channel Phison E12 w/DRAM buffer, 3D NAND TLC