Amazon.com: Timetec 16GB KIT(2x8GB) Compatible for Apple DDR3 1333MHz PC3-10600 CL9 for Mac Book Pro (Early/Late 2011 13/15/17 inch), iMac(Mid 2010, Mid/Late 2011 21.5/27 inch), Mac Mini(Mid 2011) MAC RAM Upgrade :
Apple iMac 21.5in Core i3-540 3.06GHz 8GB 500GB DVDRW WiFi iSight Webcam Bluetooth OS X Sierra (Renewed) : Amazon.co.uk: Computers & Accessories
Amazon.com: Apple iMac MF883LL/A 21.5-Inch Desktop (Discontinued by Manufacturer) (Renewed)) : Electronics
Amazon.com: Late-2015 Apple iMac with 2.8GHz Intel Core i5 Quad-core (21.5-Inch, 8GB RAM, 1TB) (Renewed) : Electronics
A-Tech 8GB RAM for Apple MacBook Pro (Early/Late 2011), iMac (Mid 2010 27 inch 4-Core, Mid 2011 21.5/27 inch), Mac Mini (Mid 2011) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Module at Amazon.com
Amazon.com: A1418 A2116 Glass for Apple iMac 21.5 Inch Front Screen Panel Protector Glass Compatible with 2012 2013 2014 2015 2017 2019 : Electronics
Amazon.com: Odyson - Power Supply 205W Replacement for iMac 21.5" A1311 (Late 2009-Late 2011) : Electronics
A-Tech 8GB RAM for Apple MacBook Pro (Early/Late 2011), iMac (Mid 2010 27 inch 4-Core, Mid 2011 21.5/27 inch), Mac Mini (Mid 2011) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Module at Amazon.com
Amazon.com: Apple iMac MNE02LL/A 21.5 Inch, 3.4GHz Intel Core i5, 8GB RAM, 1TB Fusion Drive, Silver (Renewed),macOS High Sierra : Electronics
Amazon.com: Padarsey Replacement LCD Display Cable Compatible with iMac 21.5" A1311 Mid 2010 593-1280 593-1280-A 593-1280 A 593-1280A Series(JUST fit for 2010 Year iMac 21.5",NOT for 2011 Year) : Electronics
A-Tech for Apple 2GB DDR3 1067MHz / 1066MHz PC3-8500 SODIMM iMac (Early/Mid/Late 2009, 20/24 inch, 21.5/27 inch), Mac Mini (Early/Late 2009 Mid 2010) Memory RAM Upgrade Module at Amazon.com