Product description addlink S20 SSD adopts the latest 3D NAND technology that features vertical expansion of storage cells by stacking one cell on top of the other. By using only high-quality flash chips and enhanced firmware algorithms, the S20 is guaranteed to deliver greater performance and reliability. S20 SATA III 6Gb/s. The latest 3D NAND technology 3D NAND flash is a type of flash memory in which the memory cells are stacked vertically in multiple layers. 3D NAND is developed to break through density limitations of the 2D planar NAND, and thus can deliver a greater level of performance and endurance. Transfer speed & performance Taking full advantage of the SATA III 6Gb/s interface and built in with 3D NAND flash, the S20 achieves exceptional transfer speeds of up to 510MB/s read and 400MB/s write. A new level of endurance & reliability To further increase the lifespan of the S20, built-in SmartECC and SmartRefresh for state of the art data retention and error correction ensures continued reliable data transfer. S20 series sata iii SSD has 120GB, 256GB, 512GB, 1TB capacity and Unlike old hard drives (HDD), addlink S50 has no moving parts and it can protect your data from shock and vibration. addlink S20 also runs cool and operates silently during use. Sufficient storage: addlink gives you plenty of storage to install your applications for videos, work, photos, ga model : ADATA XPG SX6000 Lite 512GB PCIe 3D NAND PCIe Internal Solid State Drive tag : Internal SSD