OWC 240GB Aura 6G Solid-State Drive for 2012-2013 MacBook Pro with Retina display. 240GB useable capacity, tier-1 MLC NAND flash, Sustained Reads 501 MB/s, Sustained Writes 503 MB/s Designed First and Best for your Mac. No Software or Hacks needed - 100% compatible with all Mac OS Versions including Yosemite 10.10.x Compatible with MacBook Pro with Retina display 2012 & early 2013. Model ID#s: MacBookPro10,1 | MacBookPro10,2 Ultra-efficient block management & wear leveling 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. 240GB useable capacity.Total Flash Memory Components  256GB.16GB allocated to real-time data redundancy &amp; error correction 223GiB Tier 1 Major Multi-Level Cell (MLC) High-Performance Sync-NAND Flash SandForce 2281 Series Processor with 7% Over Provisioning Standard up to 32 commands OWCSSDA12R240 Yes Unformatted 501MB/s 503MB/s Up to 60,000 IOPS Up to 60,000 IOPS less than 0.1ms less than 0.1ms ECC Recovery: Up to 55 bytes correctable per 512-byte sector Chip Based Data Encryption: 128-bit AES-compliant OS Dependent Less than 1 sector per 10^16bits read