2.5" SSD 1.0TB GOODRAM CX400 Gen.2, SATAIII, Sequential Reads: 550 MB/s, Sequential Writes: 500 MB/s, Maximum Random 4k: Read: 77,500 IOPS / Write: 85,000 IOPS, Thickness- 7mm, Controller Phison PS3111-S11, 3D NAND TLC