For mission critical applications that require the utmost in speed and reliability, Mercury 6G SSDs deliver performance you can count on. This internal 2.5" SATA SSD delivers outstanding transfer speeds, endurance, and reliability. With sustained reads up to 535MB/s and writes up to 443MB/s, the OWC Mercury Electra 6G SSD line delivers unbeatable performance. A 7% over provisioning set-aside further ensures exceptional long-term reliability, performance consistency, and durability. Built to perform, and backed by a 3 Year OWC SSD Limited Warranty.