8GB Memory (PC3L-12800, DDR3L 1600MHz) for Apple MacBook Pro 15 inch A1286 Mid 2012. Apple MacBook Pro 13 inch A1278 - Mid 2012. iMac 21.5 inch A1418 Late 2012, A1418 Early 2013,
Can you upgrade the RAM in the 27-inch iMac? | iMore
64GB 32GB 16GB RAM UPGRADE for Apple iMac 27" 2012 2013 2014 2015 2017 2019 2020 | eBay
Memory upgrade: Apple iMac 2012/2013/2014 (Howto)
NEMIX RAM 16GB Kit (2x8GB Upgrade) DDR3-1600 SODIMM PC3-12800 for Apple MacBook Pro Mid 2012 / iMac Late 2012 / iMac 2013, Late 2014, Mid 2015, Mac Mini Late 2012 at Amazon.com