4TB Storage Capacity, SATA III 6 Gb/s Interface, 2.5" Form Factor, Up to 550 MB/s Sequential Read Speed, Up to 520 MB/s Sequential Write Speed, AES 256-Bit Hardware-Based Encryption, V-NAND Technology Store your data in the 4TB 860 EVO SATA III 2.5 Internal SSD from Samsung for quick access. It features sequential read speeds of up to 550 MB/s and sequential write speeds of up to 520 MB/s making it ideal for storing and rendering large format files such as 4K video and 3D data. Moreover it has a 2.5 form factor which is compatible with a wide range of notebooks and desktop computers and utilizes the SATA III interface. With a refined ECC (Error Correction Code) algorithm and MJX controller the EVO 860 is able to provide you with fast data transfer speeds. Compared to its previous version the 860 EVO is rated for up to eight times more TBW (Terabytes Written) for boosted endurance. Download Samsung's Smart Magician software to track your drive's health performance and install new updates.