21.5" iMac Has No User-Upgradable RAM; 27" Has Four Accessible RAM Slots - MacRumors
How To Upgrade RAM in a Mac | Macworld
The Case of the Late-2012 iMacs - MacStories
Harder, better, faster, stronger: A review of the 27-inch iMac | Ars Technica
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
2012 21.5-Inch Apple iMac Review: Slim, Sleek, And Stylish, But Far From Shallow | TechCrunch
27" iMac (Late 2012) 32GB RAM Upgrade (How To & Guide) - YouTube
Install memory in an iMac - Apple Support
![IMAC 21.5" LATE 2012 I5 8GB RAM 1 TB HDD GEFORCE GT 640M MOUNTAIN LION OS T4-C7 | eBay](https://i.ebayimg.com/images/g/EYwAAOSwYeNjxwtu/s-l1600.jpg "IMAC 21.5" LATE 2012 I5 8GB RAM 1 TB HDD GEFORCE GT 640M MOUNTAIN LION OS T4-C7 | eBay")
IMAC 21.5" LATE 2012 I5 8GB RAM 1 TB HDD GEFORCE GT 640M MOUNTAIN LION OS T4-C7 | eBay
A-Tech 32GB Kit (4x8GB) RAM for Apple iMac (Late 2012, Late 2013, Late 2014, Mid 2015) | DDR3 1600MHz PC3-12800 SODIMM 204-Pin Memory Upgrade at Amazon.com
iMac RAM upgrade: Here's an affordable way to improve multitasking - CNET
A-Tech 8GB RAM for Apple MacBook Pro (Mid 2012), iMac (Late 2012, Early/Late 2013, Late 2014, Mid 2015), Mac Mini (Late 2012) | DDR3 1600MHz PC3-12800 SODIMM 204-Pin Memory Upgrade at Amazon.com
Apple iMac 13,1 A1418 2012 Intel Core i5 3330S 2.70GHZ 8GB RAM NO Screen/HDD/OS | eBay
iMac RAM for Model 13.2 to 15.1| DDR3-1600MHz | 8GBx4 | MacMemory.com
Timetec 16GB KIT(2x8GB) Compatible for Apple DDR3L 1600MHz for Mac Book Pro(Early/Late 2011,Mid 2012), iMac(Mid 2011,Late 2012,Early/Late 2013,Late 2014,Mid 2015), Mac Mini(Mid 2011,Late 2012) MAC RAM at Amazon.com
Memory Upgrades for iMac 21.5-Inch 2012 - Late 2013
Review: 21.5-inch 2012 iMac takes two steps forward, one step back | Ars Technica
Install memory in an iMac - Apple Support
![Apple 21.5" iMac Late 2012 - Catalina, 1TB HDD, Intel i5 2.9GHz, 8GB RAM | eBay](https://i.ebayimg.com/images/g/OL8AAOSw-xlkHHWX/s-l1600.jpg "Apple 21.5" iMac Late 2012 - Catalina, 1TB HDD, Intel i5 2.9GHz, 8GB RAM | eBay")
Apple 21.5" iMac Late 2012 - Catalina, 1TB HDD, Intel i5 2.9GHz, 8GB RAM | eBay
iMac Intel 21.5" EMC 2544 (Late 2012) Memory Maxxer RAM Upgrade Kit
Memory Upgrades for iMac 21.5-Inch 2012 - Late 2013
Apple's 27" iMac Late 2012 model. How to upgrade the ram to 16GB - YouTube
