Samsung 990 EVO 1TB NVMe M.2 Internal Solid State Drive - PCI Express 4.0 x4, 5.0 x2 - NVMe 2.0 - M.2 2280 - V-NAND TLC - Up to 5000 MB/s Read Speed - Up to 4200 MB/s Write Speed (MZ-V9E1T0B/AM)