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
4GB PC10600 DDR3 1333MHz SO-DIMM Memory Compatible with 2011 MacBook Pro, Mid 2010/2011 21.5" & 27" iMac Models, 2011 Mac Mini (OWC1333DDR3S4GB) at Amazon.com
iMac Intel 21.5" EMC 2428 RAM Replacement - iFixit Repair Guide
OWC 8GB (2 x 4GB) PC12800 DDR3L 1600MHz SO-DIMMs Memory Compatible with 2011-2015 iMac, 2011-12 Mac Mini, and 2011-2012 MacBook Pro (Non-Retina Display) Models (OWC1600DDR3S08S) at Amazon.com
iMac Intel 21.5" EMC 2428 (Mid 2011) Memory Maxxer RAM Upgrade Kit
iMac RAM for Model 11.2 to 12.2 | DDR3-1066MHz | 8GB | MacMemory.com
How to Upgrade iMac RAM (21.5" and 27" Aluminum): EveryMac.com
CMS 4GB (2X2GB) DDR3 10600 1333MHZ NON ECC SODIMM Memory Ram Upgrade Compatible with Apple® Imac "Core I5" 2.7 27-Inch (Mid-2011) - A45 - Walmart.com
Memory Upgrades for Apple iMac 2011 Up to 32GB
CMS 8GB (2X4GB) RAM Memory 4 Apple iMac "Core i5" 2.7 21.5-Inch (Mid-2011) - Walmart.com
2GB DDR3 1333 SODIMM for Apple iMac (Mid 2010,2011, Late 2011), Mac Mi – Aplus Technology
Install memory in an iMac - Apple Support
Install memory in an iMac - Apple Support
How to Upgrade iMac RAM (21.5" and 27" Aluminum): EveryMac.com
New 16GB 4x4GB Memory Apple iMac (21.5 and 27-inch, Mid 2011) PC3-10600 at Amazon.com
Maximum memory for 2011 iMac - Ask Different
iMac RAM for Model 11.2 to 12.2 | DDR3-1066MHz | 4GBx2 | MacMemory.com
32.0GB OWC Memory Upgrade Kit For 2010-2011 Apple iMac
21.5" iMac (Mid 2011) Model ID:iMac12,1 - TransIntl
Timetec 16GB KIT(2x8GB) Compatible for Apple DDR3L 1600MHz for Mac Book Pro(Early/Late 2011,Mid 2012), iMac(Mid 2011,Late 2012,Early/Late 2013,Late 2014,Mid 2015), Mac Mini(Mid 2011,Late 2012) MAC RAM at Amazon.com
iMac 2011 - 16 GB RAM Upgrade - caphotos.de - YouTube
iMac RAM Memory Installation 2009 2010 2011 21 5" Apple Dollars #13 - YouTube
