M.2 NVMe SSD 4.0TB GOODRAM IRDM PRO w/Heatsink, Interface: PCIe4.0 x4 / NVMe1.4, M2 Type 2280 form factor, Sequential Reads/Writes 7000MB/s / 6850MB/s, Random 4K Reads/Writes: 650K IOPS/700K IOPS, TBW:3000TB, MTBF: 2mln hours, Phison E18 w/DRAM Buffer, PS