4GB 2X2GB NEMIX RAM Memory for Apple iMac Late 2009 - Newegg.com
Install memory in an iMac - Apple Support
1 Apple Apple iMac 21,5" ( late 2009 ) - 240 GB SSD - 6GB - Catawiki
Install memory in an iMac - Apple Support
Timetec 8GB KIT(2x4GB) Compatible for Apple DDR3 1067MHz / 1066MHz PC3-8500 CL7 for Mac Book, Mac Book Pro, iMac, Mac Mini (Late 2008, Early/Mid/Late 2009, Mid 2010) SODIMM Memory MAC RAM Upgrade
Benefits from RAM upgrade to Late 2009 iMac | MacRumors Forums
4GB 2x 2GB Apple iMac Early 2009 Late 2009 Core 2 Duo Memory DDR3 1067 MHz RAM | eBay
How to Upgrade the RAM in Your iMac
OWC 8GB RAM Kit (2x4GB) iMac Early 2009 - Late 2009 - 4mac
8GB -2x4GB Memory Ram Upgrade 27" Apple iMac 10.1 3.06GHz Core2Duo Late 2009 | eBay
16GB 4X 4GB RAM MEMORY FOR APPLE IMAC 2009 21.5" IMAC10,1 MB950B/A MB950D/A NEW! | eBay