A-Tech 32GB (4x8GB) RAM for Apple iMac (Mid 2010 27 inch 4-Core, Mid 2011 21.5/27 inch) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Kit at Amazon.com
32.0GB OWC Memory Upgrade Kit For 2010-2011 Apple iMac
iMac 27" Mid 2010 i7 CPU 20GB ram 1TB HD, OSX High Sierra, 4k USB camera giving garbage pattern on camera feed to Lightburn - LightBurn Hardware Compatibility - LightBurn Software Forum
iMac 27" Specs and Monitoring - MC510-026B
iMac RAM upgrade: Here's an affordable way to improve multitasking - CNET
Apple iMac 21.5-inch Mid 2010 3.06GHz Intel Core i3 (MC508LL/A) – UNICOM, Inc.
Apple MC508LL/A 21.5" iMac Computer Core i3 3.06 GHz 4GB RAM 500GB HD Mid- 2010 | RecycledGoods.com
Timetec Hynix IC 16GB KIT(2x8GB) Compatible for Apple DDR3 PC3-8500 1067MHz/1066MHz Upgrade for MacBook 13'' Mid 2010, MacBook Pro 13'' Mid 2010, iMac 27''Late 2009, Mac Mini Mid 2010(16GB KIT(2x8GB)) - Newegg.com
Install memory in an iMac - Apple Support
Apple iMac 27-inch MC511LL/A (MID 2010). Core i5 @ 2.80GHz. 16GB RAM. 1TB HDD. High Sierra 10.13. for Sale in San Diego, CA - OfferUp
Apple iMac 27-inch (July 2010) review: Apple iMac 27-inch (July 2010) - CNET