late 2009 imac recognizes only two slots - Apple Community
8GB -2x4GB Memory Ram Upgrade 20" Apple iMac 9.1 2.66GHz Core 2 Duo Early 2009 | eBay
How to Upgrade iMac RAM (21.5" and 27" Aluminum): EveryMac.com
iMac Intel 24" EMC 2267 (Early 2009) Memory Maxxer RAM Upgrade Kit
iMac RAM Memory Installation 2009 2010 2011 21 5" Apple Dollars #13 - YouTube
Apple iMac 27-inch & 21.5-inch Late 2009 RAM Memory - Macfixit Australia
Install memory in an iMac - Apple Support
Benefits from RAM upgrade to Late 2009 iMac | MacRumors Forums
Apple iMac 21.5-inch, Late 2009 - 3.06GHz Core 2 Duo Memory RAM Upgrades - Low Cost Delivery & Guaranteed Compatible | Mr Memory®
Install memory in an iMac - Apple Support
How-To: Boost your Mac's speed and prolong its useful life with easy RAM upgrades - 9to5Mac
Early 2009 model iMac Computer, DDR3 8GB (2x4GB) RAM Replacement - YouTube
Install memory in an iMac - Apple Support
How to upgrade RAM on iMac 21.5" 2011 - YouTube
Install memory in an iMac - Apple Support
How to Upgrade Memory in a Late 2009 21.5-inch or 27-inch iMac - YouTube
21.5-inch or 27-inch iMac (Mid 2011) Memory Installation iMac12,1 iMac12,2 - YouTube
Memory Upgrades for Apple iMac 2009 - Up to 32GB
Apple iMac 21.5-inch, Late 2009 - 3.06GHz Core 2 Duo Memory RAM Upgrades - Low Cost Delivery & Guaranteed Compatible | Mr Memory®
Install memory in an iMac - Apple Support
iMac Intel 24" EMC 2267 RAM Replacement - iFixit Repair Guide
DDR3 RAM for Late 2009 iMac | MacRumors Forums
Install memory in an iMac - Apple Support
iMac RAM Memory Installation 2009 2010 2011 21 5" Apple Dollars #13 - YouTube
