Late 2009 Core i5 & i7 iMacs OWC MaxRAM Certified To 32GB Of Memory
Ram Memory|HDD/SSD|Thunderbolt Dock and Hubs|UK and Europe|Flexxmemory.co.uk
OWC - 16GB Memory Upgrade Kit - 2 x 8GB PC8500 DDR3 ECC-R 1066MHz DIMMs for Mac Pro Early 2009 & Late 2010 'Nehalem' & 'Westmere' Systems and Early 2009 Xserve: Amazon.de: Computer & Accessories
OWC - 32GB OWC Memory Upgrade Kit - 4 x 8GB PC21300 DDR4 2666MHz SO-DIMMs for 27-inch iMac with Retina 5K (2019 - 2020) and compatible PCs: Amazon.co.uk: Computers & Accessories