HOW TO: Upgrade The RAM to 32GB on a Mid-2011 21.5inch iMac - YouTube
How to Upgrade iMac RAM (21.5" and 27" Aluminum): EveryMac.com
Apple iMac 27” Quad Core i7 3.4Ghz 16GB 1TB (Sep,2011) A Grade 12 M Warranty - USMAC | Online IT Store for refurbished apple products
iMac 21.5-inch (Mid-2011) Core i5 2.7GHz - HDD 1 TB - 4GB | Back Market
Install memory in an iMac - Apple Support
Apple iMac 21.5-inch 2.5GHz Quad-core i5 (Mid 2011) MC309LL/A | New and Used Computers Denver
Install memory in an iMac - Apple Support
Apple iMac 21.5" desktop computer All-in-one A1311 Mid 2011 i5 2.5GHZ 8GB 500GB 788619252453 | eBay
Maximum memory for 2011 iMac - Ask Different
iMac 21.5-inch (Mid-2011) Core i5 2.5GHz - HDD 500 GB - 8GB | Back Market
A-Tech 8GB RAM for Apple MacBook Pro (Early/Late 2011), iMac (Mid 2010 27 inch 4-Core, Mid 2011 21.5/27 inch), Mac Mini (Mid 2011) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Module at Amazon.com
Apple iMac 2.5Ghz i5-2400S (Mid-2011) *No HDD/RAM* – MSU Surplus Store
iMac Intel 21.5" EMC 2428 RAM Replacement - iFixit Repair Guide
iMac 21.5-inch (Mid-2011) Core I5-2400S 2.5GHz 500 GB HDD 4GB RAM | eBay
iMac RAM upgrade: Here's an affordable way to improve multitasking - CNET
Install memory in an iMac - Apple Support
Install memory in an iMac - Apple Support
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
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
Install memory in an iMac - Apple Support
32.0GB OWC Memory Upgrade Kit For 2010-2011 Apple iMac
2012 21.5-Inch Apple iMac Review: Slim, Sleek, And Stylish, But Far From Shallow | TechCrunch
Install memory in an iMac - Apple Support
Apple iMac 21.5-Inch "Core i5" 2.9GHz (Late 2012) MD094LL/A A1418 – Coretek Computers
Apple iMac Core i7 Computers | MC812LL/A | Shop Top Brands
iMac "Core i5" 2.5 21.5" (Mid-2011) Specs (Mid-2011, MC309LL/A, iMac12,1, A1311, 2428): EveryMac.com
