. Utilizing the SATA III 6 Gb/s interface Transcend's ultracompact M.2 SSD 820S is well-suited to address the high-performance needs & strict size limitations of small form factor devices. By using only high-quality flash chips & enhanced firmware algorithms Transcend's M.2 SSD 820S delivers peerless reliability. Main Features Space-saving M.2 SATA form factor (80mm) for ultra-compact computing devices 3D NAND flash chips SATA III 6 Gb/s interface & SLC caching technology for exceptional transfer speeds Engineered with a RAID engine & LDPC (Low-Density Parity Check) coding to ensure data integrity Supports Device Sleep Mode (Dev Sleep) to prolong notebook battery life by intelligently shutting down SATA interface when not in use Supports S.M.A.R.T. TRIM & NCQ commands.