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 -
iMac RAM Models 11.3 (i5 and i7 only) to 12.2 (8GBx4) | MacMemory.com
Apple iMac A1311 21.5" AiO Computer i3-540 (Mid-2010) -
Install memory in an iMac - Apple Support
How to Upgrade the RAM in Your iMac
Install memory in an iMac - Apple Support
Can you upgrade the RAM in the 27-inch iMac? | iMore
hardware - Can I add different size RAMs to iMac 5K? - Ask Different
Install memory in an iMac - Apple Support
iMac RAM upgrade: Here's an affordable way to improve multitasking - CNET
32GB Kit (4 x 8GB) PC3-12800 RAM for Apple iMac Late 2014 - 27 Inch Retina