Apple iMac A1225 20" Desktop - MB417LL/A (March, 2009) for sale online | eBay
Install memory in an iMac - Apple Support
A-Tech for Apple 6GB Kit (1x2GB + 1x4GB) DDR2 667MHz PC2-5300 200-pin SODIMM for MacBook (Late 2007, Early 2008, Early 2009), MacBook Pro (Mid 2007, Early 2008), iMac (Mid 2007) - Memory RAM Upgrade at Amazon.com
iMac "Core 2 Duo" 2.26GHz 20-Inch (Mid-2009) - MacUpgrades.co.uk
How to Upgrade the RAM in Your iMac
Apple iMac "Core 2 Duo" 2.66 20-Inch (Early 2008) , 320 GB Hard Drive, 2 GB RAM - Imagine41
Install memory in an iMac - Apple Support
iMac Intel 21.5" EMC 2428 RAM Replacement - iFixit Repair Guide
How to Upgrade the iMac 20-inch (Early 2009)
Install memory in an iMac - Apple Support
A-Tech for Apple 4GB Kit (2X 2GB) DDR3 1067MHz / 1066MHz PC3-8500 SODIMM iMac (Early/Mid/Late 2009, 20/24 inch, 21.5/27 inch), Mac Mini (Early/Late 2009 Mid 2010) Memory RAM Upgrade at Amazon.com
Apple iMac 20-inch Early 2009 - 2.66GHz Core 2 Duo Apple RAM Memory | Kingston
iMac (2009) RAM & Storage Upgrades
Early-2009 iMac 24" for only $35! : r/mac
iMac 20-Inch "Core 2 Duo" 2.26 (Mid-2009) Specs (Mid-2009 (Edu), MC015LL/B*, iMac9,1, A1224, 2316): EveryMac.com
Install memory in an iMac - Apple Support
how to upgrade iMac early 2009 SSD and RAM - full class - YouTube
iMac | 2.66 GHz Core 2 Duo | 20 Inch | Early 2009 - Techable.com
iMac Intel 24" EMC 2267 RAM Replacement - iFixit Repair Guide
iMac (Early 2009) | Low End Mac
