OWC 480GB Aura 6G Solid-State Drive for 2012-2013 MacBook Pro with Retina display. OWC 480GB Aura 6G Solid State Drive - OWC 3 Year Limited Warranty Compatibility: MacBook Pro (15" Retina Display 2013)MacBook Pro (13" Retina Display 2013)MacBook Pro (15" Retina Display 2012)MacBook Pro (13" Retina Display 2012-2013) Capacity: 480GB useable capacityTotal Flash Memory Components - 512GB32GB allocated to real-time data redundancy & error correction Formatted Capacity: 447GiB NAND: Tier 1 Major Multi-Level Cell (MLC) High-Performance Sync-NAND Flash