The Transcend SATA III 6Gb/s M.2 SSD 425S features a compact form factor and high-quality 3D NAND flash, allowing you to upgrade your ultrabooks and laptops in no time. The SSD is equipped with several firmware optimization technologies such as SLC caching and LDPC ECC mechanism, which enhance the reliability of the storage and extend the lifespan of the drive. A small upgrade can make a big difference. The height of the M.2 SSD 425S is only 42 mm, making it ideal for ultrabooks and lightweight notebooks. The M.2 SSD 425S is thinner and lighter than regular hard drives, giving your computer the much-needed boost while saving space.