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
CMS 8GB (1X8GB) DDR3 10600 1333MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Apple® MacBook Pro Core I5 2.4 13.3" Md313Ll/A A1278 - A14 at Amazon.com
2012 Macbook Pro 13" A1278 RAM Upgrade - YouTube
Apple MacBook Pro A1278 - 13.3" Laptop Intel i7 8GB RAM 750GB HDD MC724LL/A 885909437023 | eBay
Apple Macbook Pro A1278 13" i5-3210M (Mid-2012) - Grade C