Timetec 32GB KIT(2x16GB) Compatible for Apple DDR4 2666MHz / 2667MHz for Mid 2020 iMac (20,1/20,2) / Mid 2019 iMac (19,1) 27-inch w/Retina 5K, Late 2018 Mac Mini (8,1) PC4-21333 /PC4-21300 MAC RAM at Amazon.com
iMac Intel 24" EMC 2134 and 2211 Repair - iFixit
How to Upgrade iMac RAM (20" and 24" Aluminum): EveryMac.com
Maximum RAM iMac early 2008 | MacRumors Forums
4GB -2x2GB Memory Ram Upgrade 20" Apple iMac-8.1 2.4GHz Core 2 Duo Early 2008 | eBay
apple-history.com / iMac (Early 2008)
Maximum RAM iMac early 2008 | MacRumors Forums
iMac | 2.4 GHz Core 2 Duo | 20 Inch | Early 2008 - Techable.com