How to make your MacBook Pro faster – upgrading a MacBook Pro mid-2012 to SSD and more RAM memory - Andy the webdeveloper
MacBook Pro Memory Upgrade - How-tos and DIY - Corsair Community
MacBook Pro Memory Upgrade - How-tos and DIY - Corsair Community
CMS 16GB (2X8GB) DDR3 12800 1600MHz Non ECC SODIMM Memory Ram Upgrade Compatible with Apple® MacBook Pro Core I5 2.5 13" Mid-2012 - A7 at Amazon.com
A-Tech 8GB Kit (2x4GB) 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