4GB Ram Memory (PC3L-12800, DDR3 1600MHz) for Apple MacBook Pro 15 inch A1286, 13 inch A1278 . iMac 21.5 inch A1418 , 27 inch A1419 , Mac Mini A1347 ( Mid 2012 - Mid 2015) - MacWave | Advanced Mac Tech
2012 Macbook Pro 15" A1286 RAM Upgrade - YouTube
2012 Macbook Pro 13" A1278 RAM Upgrade - YouTube
Upgrading My MacBook Pro i5 (Mid 2012) With 16GB Memory - miapple.me - Tech.Blog