Crucial 16GB 2x8GB PC3-12800 DDR3 1600MHz RAM for MacBook Pro 13" Mid-2012 A1278 – MASER PET
2012 Apple MacBook Pro Core i7 2.5GHz i5 MD101LL/A
How to Upgrade MacBook Pro RAM (2009, 2010, 2011, 2012): EveryMac.com
Macbook Pro Apple 13" inch Catalina 10.15 (2012-2014 model) w/ 16GB RAM Upgrade! | eBay
Mid-2012 Macbook Pro 16GB RAM Upgrade How To - YouTube
Adamanta 16GB (2x8GB) Apple Memory Upgrade DDR3L 1600MHz SODIMM Compatible for iMac (Mid 2011, Late 2012, Early/Late 2013, Late 2014, Mid 2015), MacBook Pro (Early/Late 2011, Mid 2012), Mac Mini RAM at Amazon.com