How to Upgrade iMac RAM (21.5" and 27" Aluminum): EveryMac.com
A-Tech 32GB (4x8GB) RAM for Apple iMac (Mid 2010 27 inch 4-Core, Mid 2011 21.5/27 inch) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Kit at Amazon.com
Apple iMac (27-Inch Mid 2011) 2.7GHz Intel Core i5 1TB HDD 4GB Memory for sale online | eBay
RAM upgrade considerations for iMac systems - CNET
How to upgrade RAM / Memory on a 2010 iMac Core i3 i5 i7 (21.5in & 27in) - YouTube
How to Upgrade Memory in a 21.5-inch or 27-inch iMac (Mid 2010) - YouTube
iMac | 2.93 GHz Intel i7 | 27 Inch | Mid 2010 - Techable.com
CMS 16GB (4X4GB) DDR3 10600 1333MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Apple® iMac Core I3 3.06 21.5-Inch (Mid-2010) - A28 at Amazon.com
Install memory in an iMac - Apple Support (PH)
A-Tech 16GB (4x4GB) RAM for Apple iMac (Mid 2010, Mid 2011, Late 2011) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Kit at Amazon.com
Install memory in an iMac - Apple Support (SG)
Memory Upgrades for iMac 27-Inch (2012 - Mid 2015)
iMac Intel 21.5" EMC 2389 RAM Replacement - iFixit Repair Guide
Is it worth it to upgrade RAM on Mid 2010 21.5 iMac? | MacRumors Forums
Installing additional SSD in Mid-2010 27" iMac
Install memory in an iMac - Apple Support
Install memory in an iMac - Apple Support
iMac "Core i3" 3.2 21.5" (Mid-2010) Specs (Mid-2010, MC509LL/A, iMac11,2, A1311, 2389): EveryMac.com
iMac 2009 to 2011 (A1311/A1312) Upgrade Guide – MacintoshMen
Used: IMac (27-inch, Mid 2010) 2.93 GHz QC I7 16 GB RAM (32 GB Max) 1 TB HD | Mac-Ave
apple-history.com / iMac (Mid 2010)
