Samsung 850 Pro 2TB Solid State Drive (MZ-7KE2T0BW) - 2.5-inch SATA III SSD, 7mm, Read Speed up to 550 MB/s, Write Speed up to 520 MB/s, 4KB Random Read Max 100000 IOPS, 4KB Random Write Up to 90000 IOPS, MHX Controller, 32 layer 3D V-Nand