Intel SSD 520 180GB. Solid-state drive capacity: 180 GB, Size: 63.5 mm (2.5 "), Solid-state drive interfaces: Serial ATA III. Read speed: 550 MB/s, Write speed: 520 MB/s, Random write (4KB): 70000 IOPS. Data retention: 5 year(s). Bundled software: Intel Data Migration Software, Intel Solid-State Drive Toolbox. Device connectivity: Wired