2.5" SSD 512GB GOODRAM CX400 Gen.2, SATAIII, Sequential Reads: 550 MB/s, Sequential Writes: 500 MB/s, Maximum Random 4k: Read: 75,500 IOPS / Write: 76,800 IOPS, Thickness- 7mm, Controller Phison PS3111-S11, 3D NAND TLC