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
iMac Intel 21.5" EMC 2428 RAM Replacement - iFixit Repair Guide
Amazon.com: Crucial 4GB Upgrade for a Apple iMac (21.5 and 27-inch, Mid 2011) System (DDR3 PC3-10600, Non-ECC,) : Electronics
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 I3 3.06 21.5-Inch (Mid-2010) - A28 at Amazon.com
How to Upgrade Memory in a 21.5-inch or 27-inch iMac (Mid 2010) - YouTube
Memory RAM Upgrade for Apple iMac 21.5-inch Mid 2011 4GB/8GB DDR3 SODIMM | eBay
Apple - iMac (21.5-inch, Mid 2011) i5, 8GB, 256GBSSD, High Sierra- Ref – Ordinateur St Joseph
iMac 21.5-inch Mid 2011 20G RAM and RAM Access Cover (Crucial and Elpida) | eBay
iMac 21.5-inch (Mid-2011) Core I5-2400S 2.5GHz 500 GB HDD 4GB RAM | eBay
Install memory in an iMac - Apple Support
Apple iMac 21.5-Inch Core i5 2.5GHz Mid 2011 8GB RAM 500GB HDD | eBay
iMac "Core i5" 2.5 21.5" (Mid-2011) Specs (Mid-2011, MC309LL/A, iMac12,1, A1311, 2428): EveryMac.com
Apple iMac 21.5-Inch Core i5 2.10GHz Mid 2011 8GB RAM 500GB HDD WEBCAM DVD WIFI | eBay
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
21.5-inch or 27-inch iMac (Mid 2011) Memory Installation iMac12,1 iMac12,2 - YouTube
Apple iMac 21.5-inch June 2011 2.8GHz Intel Core i7 (BTO/CTO) | eBay
Apple iMac 21.5-inch 2.8GHz Quad-core i7 (Mid 2011) MC812LL/A-BTO | mac of all trades
Apple iMac (21.5-Inch Mid 2011) 2.5GHz Intel Core i5, 500GB HD 16GB RAM with box | eBay
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
Apple iMac (21.5-inch, Mid 2011) Serial Number Lookup - AppleSN.info
iMac 21.5-inch (Mid-2011) Core I5-2400S 2.5GHz 500 GB HDD 4GB RAM | eBay
Memory Upgrades for Apple iMac 2011 Up to 32GB
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
