Install memory in an iMac – Apple Support (UK)
iMac Intel 24" EMC 2267 (Early 2009) Memory Maxxer RAM Upgrade Kit
iMac (2009) RAM & Storage Upgrades
A-Tech 2GB RAM for Apple MacBook (Mid 2009), iMac (Early 2008) | DDR2 800MHz PC2-6400 SODIMM 200-Pin Memory Upgrade - Newegg.com
Apple iMac 2009 2010 2011 Ram Memory 4GB DDR3 PC3-8500 1067Mhz 1 X 4GB Stick | eBay
iMac RAM Memory Installation 2009 2010 2011 21 5" Apple Dollars #13 - YouTube
late 2009 imac recognizes only two slots - Apple Community
iMac Intel 27" EMC 2309 (Late 2009) Memory Maxxer RAM Upgrade Kit
OWC Performance Upgrades for iMac 2010
16GB 4x 4GB Memory Ram For Apple iMac 21.5-in & 27-in Late 2009 - Walmart.com
Apple iMac (27-inch, Late 2009) Core i5/i7 Memory RAM | 4GB DDR3 1066M — A-Tech Memory
US 4GB PC3-8500 DDR3-1066 MHz 1.5v 204pin RAM For iMac 21.5-Inch Late 2009 A1311 | eBay
OWC 6GB (2GB + 4GB) PC8500 DDR3 1066MHz SO-DIMMs Memory RAM Upgrade Compatible with Late 2008, Early 2009, Early 2010 MacBook, MacBook Pro Unibody Models, Mac Mini, 2009 iMac (OWC8566DDR3S6GP) at Amazon.com
Memory Upgrades for Apple iMac 2009 - Up to 32GB
CMS 4GB (2X2GB) DDR3 8500 1066MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Apple® iMac Early 2009 LAT 2009 Core 2 Duo DDR3 1067 MHz RAM - A47 at Amazon.com
Apple iMac 27-inch Late 2009 3.06GHz Intel Core 2 Duo (MB952LL/A) – UNICOM, Inc.
iMac (2007-2009) Memory Installation Video - YouTube
Install memory in an iMac - Apple Support
Apple A1225 24-inch iMac Core 2 Duo 2.4 GHz 2 GB RAM 320 GB HDD Early 2009 | RecycledGoods.com
iMac 20-Inch Early 2009 | 2GB RAM | 320 GB HDD | eBay
