Apple iMac 21.5" (Mid 2010) - macOS Big Sur - 8GB RAM - 500GB HD - iMac - Catawiki
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
16GB -2x8GB Memory Ram Upgrade for 27" Apple iMac-11.3 Core i5 3.6GHz Mid 2010 | eBay
32GB iMac Memory for Mid 2010 to Mid 2011 Models 11,3 (i5/i7) 12,1 (i5/i7) and 12,2 (8GBx4)
Apple iMac 2010 (Mid) 21.5-inch (iMac 11,2) SSD ,Ram & OSX Upgrades - ZD Laptop Service Centre
How to Upgrade iMac RAM (21.5" and 27" Aluminum): EveryMac.com
Instalar una memoria en una iMac - Soporte técnico de Apple
iMac Mid 2010 27" Upgrade Kit - Real Mac Mods
iMac Mid-2010 27 inch (A1312) SSD and RAM disassembly and upgrade - Much FASTER! - YouTube
Memory RAM Upgrade for Apple iMac 21.5-inch Mid 2010 4GB DDR3 SODIMM | eBay