How to Upgrade the SSD in a 15-inch MacBook Pro w/ Retina display (Mid 2012–Early 2013) on Vimeo
A-Tech 16GB Kit (2x8GB) RAM for Apple MacBook Pro (Mid 2012), iMac (Late 2012, Early/Late 2013, Late 2014, Mid 2015), Mac Mini (Late 2012) | DDR3 1600MHz PC3-12800 SODIMM 204-Pin Memory Upgrade at Amazon.com
Ultimate Guide on How to Upgrade Mid 2012 MacBook Pro: Faster and Better Than New! | College Lighthouse
MacBook Pro 13" Unibody A1278 (Mid 2012) RAM Upgrade Kit
OWC SSD Kits For MacBook Pro Retina Display 2012 - 2013