Mid-2012 Macbook Pro 16GB RAM Upgrade How To - YouTube
Timetec 32GB KIT(4x8GB) Compatible for Apple DDR3L 1600MHz PC3L-12800 CL11 for iMac (Mid 2011, Late 2012, Late 2013, Late 2014 Retina 5K, Mid 2015 Retina 5K) SODIMM Memory Module MAC RAM Upgrade at Amazon.com
upgrade - 32gb of RAM on a 2011 or 2012 15/17-inch MacBook Pro using Crucial's 16gb single DIMMs - Ask Different
Is It Worth It to Upgrade RAM on a Macbook Pro?
Tried putting 32GB DDR3L (2x16) into mid-2012 MBP. As expected does not work. : r/macbookpro