Install memory in an iMac - Apple Support
How do the "Late 2009" Aluminum iMac models compare to the "Early 2009" models that preceded them?: EveryMac.com
Memory Upgrades for Apple iMac 2009 - Up to 32GB
Apple iMac (27-Inch Late 2009) 2.66GHz Intel Core i5, 500gb HD 4GB Memory | eBay
Benefits from RAM upgrade to Late 2009 iMac | MacRumors Forums
Review: Apple's 27" big screen iMac (late 2009) | AppleInsider
Buy Timetec Hynix IC 16GB KIT4x4GB Compatible for Apple DDR3 1067MHz 1066MHz PC3-8500 for iMac Late 2009 21.5-inch 27-inch MAC SODIMM RAM Upgrade | MAX Slots Upgrade for iMac 10,1 iMac 11,1
5 Things to Know Before Upgrading Your 2009 or Later iMac
Can the Late 2009 27" iMac handle 32GB of RAM? | MacRumors Forums
iMac 21.5-inch (Late 2009) Core 2 Duo 3.06GHz - HDD 1 TB - 4GB QWERTY - English (US) | Back Market
iMac (27-inch, 3.06GHz Intel Core 2 Duo, Late 2009) | iGotOffer
iMac Intel 27" Late 2009 EMC 2309 - realrecyclers
Catalina 10.15.3 running decent on my mid 2009 iMac. Gonna max out the RAM to 8GB. 🤗 : r/CatalinaPatcher
iMac 27-Inch "Core 2 Duo" 3.06 (Late 2009) Specs (Late 2009, MB952LL/A, iMac10,1, A1312, 2309): EveryMac.com
iMac Intel 24" Early 2009 EMC 2267 - realrecyclers
Apple iMac "Core i5" 2.66 27-Inch (Late 2009) Quad Core - Imagine41
iMac Intel 27" EMC 2309 and 2374 RAM Replacement - iFixit Repair Guide
iMac | 3.06 GHz Core 2 Duo | 21.5 Inch | Late 2009 - Techable.com
iMac Intel 27" EMC 2309 (Late 2009) Memory Maxxer RAM Upgrade Kit - iFixit Store
RAM Upgrades For Apple MacBook (2009 - 2010) from OWC
How to Upgrade the RAM in Your iMac
Review: Apple's 27" big screen iMac (late 2009) | AppleInsider
Install memory in an iMac - Apple Support (NZ)
Apple iMac 27-inch Late 2009 - 2.8GHz Core i7 Desktop DDR3 RAM Memory | Kingston
How I kept my iMac running for a decade | Cult of Mac
Memory Upgrades for Apple iMac 2009 - Up to 32GB
