How to Upgrade iMac RAM (21.5" and 27" Aluminum): EveryMac.com
iMac RAM upgrade: Here's an affordable way to improve multitasking - CNET
iMac Core I7 Review (Mid 2010) - SlashGear
Apple iMac Mid 2010 for Sale in Washington, DC - OfferUp
Apple iMac 27-inch (July 2010) review: Apple iMac 27-inch (July 2010) - CNET
Installing additional SSD in Mid-2010 27" 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
Install memory in an iMac - Apple Support
Is it worth it to upgrade RAM on Mid 2010 21.5 iMac? | MacRumors Forums
iMac RAM Models 11.3 (i5 and i7 only) to 12.2 (8GBx4) | MacMemory.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)) Laptop Memory -