[Pre Order - allow extra time] Transcend 256GB M.2 2242 PCIe 4.0 x 4 Internal SSD 256GB Capacity, NVMe PCIe 4.0 x4 Interface, Up to 3300 MB/s Read Speed, Up to 1600 MB/s Write Speed, 3D NAND Flash, 150 TBW Endurance, 2-Million Hours MTBF, Non-DRAM Design