How to Upgrade iMac RAM (21.5" and 27" Aluminum): EveryMac.com
CMS 16GB (4X4GB) DDR3 10600 1333MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Apple® iMac Core I5 2.5 21.5-Inch (Mid-2011) - A28 at Amazon.com
Apple iMac 21.5-inch MC309LL/A Mid 2011 Silver - Intel Core i5-2400S 2.5Ghz - 4GB RAM - 500GB HDD (Scratch and Dent) - Walmart.com
A-Tech 32GB (4x8GB) RAM for Apple iMac (Mid 2010 27 inch 4-Core, Mid 2011 21.5/27 inch) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Kit at Amazon.com
HOW TO: Upgrade The RAM to 32GB on a Mid-2011 21.5inch iMac - YouTube
Install memory in an iMac - Apple Support
Apple iMac 21.5-inch Mid 2011 2.5GHz Intel Core i5 (MC309LL/A) – UNICOM, Inc.
Install memory in an iMac - Apple Support
21.5-inch or 27-inch iMac (Mid 2011) Memory Installation iMac12,1 iMac12,2 - YouTube
Memory Upgrades for Apple iMac 2011 Up to 32GB
OFFTEK 4GB Replacement Memory RAM Upgrade for Apple iMac 2.5GHz Intel Quad-Core i5 - (21.5-Inch) (DDR3 - Mid 2011) (DDR3-10600) Desktop Memory at Amazon.com
Apple iMac 2011 (Mid) 21.5-inch (iMac 11,2) SSD ,Ram & OSX Upgrades - ZD Laptop Service Centre
Apple iMac 21.5" All-in-One Desktop Computer i3 3.07GHz 4GB Ram 500GB HDD Mac OS High Sierra MC508LL/A w/ Keyboard & Mouse
8GB -2x4GB Memory Ram Upgrade 21.5" Apple iMac-12.1 Core i5 2.5GHz Mid 2011 | eBay
NEMIX RAM 32GB (4x8GB Upgrade) DDR3-1333 PC3-10600 204-Pin SODIMM Memory for Apple MacBook Pro Early/Late 2011, iMac Mid 2010 27 inch 4-Core, iMac Mid 2011 21.5/27” , Mac Mini Mid 2011 at Amazon.com
iMac Intel 21.5" EMC 2428 (Mid 2011) Memory Maxxer RAM Upgrade Kit
iMac Intel 20" EMC 2105 and 2118 RAM Replacement - iFixit Repair Guide
RAM Upgrade for iMac Mid 2011 21.5-inch | MacRumors Forums
Apple iMac (21.5-Inch Mid 2011) 2.5GHz Intel Core i5, 500GB HD 16GB RAM with box | eBay
32.0GB OWC Memory Upgrade Kit For 2010-2011 Apple iMac
2011 - 21.5" iMac, 2.5GHz Quad Core i5 Processor, 12GB RAM, 1TB HD – The Apple Xchange - Preowned Apple Products and Services
Review: 21.5-inch 2012 iMac takes two steps forward, one step back | Ars Technica
Apple iMac 21.5-inch, Mid 2011 - 2.5GHz Core i5 Memory RAM Upgrades - Low Cost Delivery & Guaranteed Compatible | Mr Memory®
How to Upgrade iMac RAM (21.5" and 27" Aluminum): EveryMac.com
21.5” mid-2011 iMac wires? Finally trying to upgrade my RAM and these wires are blocking the slot — did get an iMac with poor build quality? What can I do? : r/mac
Apple iMac Mid 2011 21.5-inch 2.7GHz Core i5 Apple DDR3 RAM Memory | Kingston
Apple iMac 3.0Ghz Core 2 Duo 21.5-Inch (Late-2009) *No HDD/RAM* – MSU Surplus Store
