NEMIX RAM 32GB (4x8GB Upgrade) DDR3-1333 PC3-10600 204-Pin SODIMM Memory for Apple MacBook Pro Early/Late 2011, iMac Mid 2010 27 inch 4-Core, iMac Mid 2011 21.5/27” , Mac Mini Mid 2011 at Amazon.com
HOW TO: Upgrade The RAM to 32GB on a Mid-2011 21.5inch iMac - YouTube
Memory Upgrades for Apple iMac 2011 Up to 32GB
Apple iMac 27" Mid 2011 QHD i7-2600 32GB Ram 1TB HDD AMD HD 6970M HS OS DMG2 | eBay
Apple says it's vintage. It's a 21.5 in 2011 iMac w/ 32GB ram, 4GB AMD wx4150, 512GB and 1TB internal SSDs on a 2nd primary 2011 Thunderbolt Display running Ubuntu. Playing some Apex Legends right now : r/retrobattlestations
timetec 32gb kit(4x8gb) compatible for apple ddr3l 1600mhz pc3l-12800 cl11 for imac (mid 2011, late 2012, late 2013, late 2014 retina 5k, mid 2015 retina 5k) sodimm memory module mac ram upgrade - Walmart.com
iMac Ram Upgrade: Upgrade the Ram of Apple iMac mid 2011 to 32GB - YouTube
Apple iMac 27in W 32gb Ram For Content Creators for Sale in Houston, TX - OfferUp
Timetec 32GB KIT(4x8GB) Compatible for Apple DDR3L 1600MHz PC3L-12800 CL11 for iMac (Mid 2011, Late 2012, Late 2013, Late 2014 Retina 5K, Mid 2015 Retina 5K) SODIMM Memory Module MAC RAM Upgrade at Amazon.com
27 inch iMac with Retina 5k Display 2019 3.7GHz i5 1TB SSD 32GB RAM | Refurbished | Techable