The New 2017 iMac: Notes & Tidbits on RAM - The Mac Observer
What Does It Take To Upgrade a 2012 iMac 21.5"?
Amazon.com: A-Tech Kit de 16 GB (2 x 8 GB) RAM para Apple MacBook Pro (mediados de 2012), iMac (finales de 2012, principios/finales de 2013, finales de 2014, mediados de 2015), Mac
Install memory in an iMac - Apple Support
How To Upgrade RAM in a Mac | Macworld
Teardown of New 21.5-inch iMac Reveals Glued Down LCD and Dual Microphones - MacRumors
Memory Upgrades for iMac 27-Inch (2012 - Mid 2015)
Apple iMac 2012 (Late) 21.5-inch (iMac 13,1) SSD ,Ram & OSX Upgrades - ZD Laptop Service Centre
2012 21.5-Inch Apple iMac Review: Slim, Sleek, And Stylish, But Far From Shallow | TechCrunch
Can you upgrade the RAM in the 27-inch iMac? | iMore