Silicon Power 2.5 256GB SATA III TLC 3D NAND Internal Solid State Drive (SSD) SU256GBSS3A55S25AE. Bring new life to your tired PC for far less cost than you would expect with the Silicon Power A55 SSD, which is positioned as one of the most cost-effective high-performance SSD models. Featuring advanced SATA III 6Gbps interface and implementing 3D NAND flash, it provides higher performance and greater stability and durability than HDDs. With support for SLC Caching, DRAM Cache Buffer, and auto-copy technology, it provides higher efficiency and longer lifespan. It s equipped with S.M.A.R.T. monitoring system and ECC (error correction code) technology for superior data transmission safety. It also employs bad block management technology to prevent flash memory corruption, ensuring maximum reliability. The Silicon Power s free-download software (SP Toolbox) lets you easily monitor your new SSD s health.