Designed as upgrades for Ultra books and slim notebooks, ADATA SP550 M.2 series are the perfect choice for devices with limited interior space. Powered by smi controllers, SP550 M.2 SSD provides excellent performance even with an ultra-compact size of just 22 x 80 x 3.5mm. Featuring intelligent SLC caching technology and DRAM cache buffer, it can Boost read/write speeds on demand based on task. The Premier SP550 M.2 2280 supports LDPC ECC Engine, RAID Engine, and data shaping, enhancing the reliability of data transfer and overall system stability. Premier SP550 M.2 2280 is an extra-reliable high speed storage option for your Ultra books and notebooks.