Teardown of new 21.5-inch iMac surprisingly reveals user-upgradable RAM, modular CPU - 9to5Mac
iMac Intel 21.5" EMC 2428 (Mid 2011) Memory Maxxer RAM Upgrade Kit
32.0GB OWC Memory Upgrade Kit For 2010-2011 Apple iMac
Apple iMac 21.5" All-in-One Desktop Computer i5-2500s 2.7GHz 8GB Ram 1TB Mac OS High Sierra MC812LL/A w/ Keyboard & Mouse
How to upgrade RAM on iMac 21.5" 2011 - YouTube
2011 iMac 21.5"- Refurbished - MacTek - Computer & Phone Repair & IT Support
Apple 21.5" iMac (Late 2015) MK442LL/A B&H Photo Video
Maximum memory for 2011 iMac - Ask Different
Apple iMac (spring 2011) review: Apple iMac (spring 2011) - CNET
Apple iMac 21.5-inch 2.8GHz Quad-core i7 (Mid 2011) MC812LL/A Best Buy! | MacBlowouts
21.5" mid 2011 iMac performance on DOTA 2 | MacRumors Forums
Install memory in an iMac - Apple Support
iMac "Core i5" 2.5 21.5" (Mid-2011) Specs (Mid-2011, MC309LL/A, iMac12,1, A1311, 2428): EveryMac.com
Apple iMac 2011 (Mid) 21.5-inch (iMac 11,2) SSD ,Ram & OSX Upgrades - ZD Laptop Service Centre
Best Buy: Apple 21.5" iMac® Intel Core i5 (3.0GHz) 8GB Memory 1TB Hard Drive Silver MNDY2LL/A
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
i5 LED iMac (21.5-inch, Mid 2011)
Apple iMac 21.5" Mid 2011 12,1 Intel Quad Core i5 2.50GHz 256GB SSD 16GB RAM | eBay
iMac 21.5" A1311 - Mid 2011 • Beetstech
iMac RAM upgrade: Here's an affordable way to improve multitasking - CNET
Apple iMac 21.5" A1311 i3 3.06GHz 8GB RAM 500GB HD OSX El Capitan - DCPS Computer Program
Refurbished: Apple iMac 21.5" All In One Desktop PC Intel Quad Core i5 4GB 500GB - MC309LL/A - Newegg.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 MC812B/A (2011) Review | Trusted Reviews
Install memory in an iMac - Apple Support
