Ideal as an upgrade to an aging laptop, or as additional storage in an existing system, the WD Blue SATA SSD is an outstanding choice. A WD Blue SATA SSD can last up to 1.75M hours MTTF (mean time to failure), with up to 600 TBW (terabytes written), and has built in technology to correct errors in real time. Western Digital technology helps enable sequential read speeds up to 560MB/s and sequential write speeds up to 530MB/s for fast system boot-ups, quick application responses, and rapid transfer speeds. WD Blue SSDs include a 5-year limited warranty, so you can confidently trust WD for years of data storage expertise.