MacBook Pro (Retina, 15-inch, Mid 2012) SSD Upgrade - A Leslie Wong Blog
Amazon.com: 256GB SSD Hard Drive for Apple MacBook Pro Air 11" 13" 15" A1502 A1398 A1465 A1466 (Late 2013-2015) / OSX Sierra/Mac Pro A1481 : Electronics
Restored Apple MacBook Pro Retina Core i7 2.2GHz 16GB RAM 256GB SSD 15 MGXA2LL/A (Refurbished) - Walmart.com