120GB OWC Aura 6G Solid-State Drive for 2012 MacBook Air 120GB useable capacity, Tier 1 Major Multi-Level Cell (MLC) High-Performance Sync-NAND Flash, Sustained Reads 501 MB/s, Sustained Writes 503 MB/s Engineered to be the best for Mac-Installation videos available on OWC's site. Ultra-efficient block management & wear leveling Compatible with: MacBook Air 13-inch (Mid 2012 Model ID:MacBookAir5,2) (2012 Educational Model ID:MacBookAir4,2) MacBook Air 11-inch (Mid 2012 Model ID:MacBookAir5,1) 3 Year OWC Limited Warranty <span class="a-text-bold">DuraWrite</span>extends the endurance of your Solid State Drive (SSD). <span class="a-text-bold">Intelligent Block Management &amp; Wear Leveling</span>automatically distributes data evenly across the entire SSD. <span class="a-text-bold">Intelligent Read Disturb Management</span>spreads the active read/write across the flash components eliminating data corruption caused by constant use. <span class="a-text-bold">Intelligent &#034;Recycling&#034;</span>for advanced free space management gradually re-writes data across the SSD over time to ensure data never gets corrupted. <span class="a-text-bold">RAISE</span>(Redundant Array of Independent Silicon Elements) protects the data on your drive similar to having a RAID setup. <span class="a-text-bold">Best-in-Class ECC Protection</span>for longest data retention and drive life.