Apple iMac (21.5-Inch Mid 2011) 2.5GHz Intel Core i5, 500GB HD 16GB RAM with box | eBay
Apple iMac 2011 (Mid) 21.5-inch (iMac 11,2) SSD ,Ram & OSX Upgrades - ZD Laptop Service Centre
Memory Upgrades for Apple iMac 2011 Up to 32GB
32.0GB OWC Memory Upgrade Kit For 2010-2011 Apple iMac
A-Tech 16GB (4x4GB) RAM for Apple iMac (Mid 2010, Mid 2011, Late 2011) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Kit at Amazon.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
RAM Upgrade for iMac Mid 2011 21.5-inch | MacRumors Forums
How to Upgrade iMac RAM (21.5" and 27" Aluminum): EveryMac.com
How to upgrade RAM on iMac 21.5" 2011 - YouTube
iMac 21,5 2009-2011 LGA 1156 with i7, works good!! | MacRumors Forums
Apple iMac 3.0Ghz Core 2 Duo 21.5-Inch (Late-2009) *No HDD/RAM* – MSU Surplus Store
2011 - 21.5" iMac, 2.5GHz Quad Core i5 Processor, 12GB RAM, 1TB HD – The Apple Xchange - Preowned Apple Products and Services
CMS 16GB (2X8GB) RAM Memory 4 Apple iMac "Core i7" 2.8 21.5-Inch (Mid-2011) - Walmart.com
Review: 21.5-inch 2012 iMac takes two steps forward, one step back | Ars Technica
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
iMac Intel 21,5" Late 2011 (EDU) EMC 2496 - used original spareparts for Macs
8GB -2x4GB Memory Ram Upgrade 21.5" Apple iMac-12.1 Core i5 2.5GHz Mid 2011 | eBay
Apple iMac 21.5-inch, Mid 2011 - 2.5GHz Core i5 Memory RAM Upgrades - Low Cost Delivery & Guaranteed Compatible | Mr Memory®
21.5-inch or 27-inch iMac (Mid 2011) Memory Installation iMac12,1 iMac12,2 - YouTube
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
Install memory in an iMac - Apple Support
Install memory in an iMac - Apple Support
iMac Mid 2011 21.5" Upgrade Kit - Real Mac Mods
iMac Intel 21.5" EMC 2428 (Mid 2011) Memory Maxxer RAM Upgrade Kit
