2.5" SSD 256GB GOODRAM IRDM PRO GEN.2, SATAIII, Sequential Reads: 555 MB/s, Sequential Writes: 535 MB/s, Maximum Random 4k: Read: 96,000 IOPS / Write: 81,000 IOPS, Thickness- 7mm, Controller 8Channel Phison PS3112-S12, DRAM DDR3L cache, 3D NAND TLC