HOW TO: Upgrade The RAM to 32GB on a Mid-2011 21.5inch iMac - YouTube
iMac RAM Models 11.3 (i5 and i7 only) to 12.2 (8GBx4) | MacMemory.com
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Install memory in an iMac - Apple Support
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32.0GB OWC Memory Upgrade Kit For 2010-2011 Apple iMac
2011 iMac 27"- Refurbished - MacTek - Computer & Phone Repair & IT Support
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iMac Intel 21.5" EMC 2428 (Mid 2011) Memory Maxxer RAM Upgrade Kit
Crucial 8GB DDR3L-1600 SODIMM Memory for Mac | CT8G3S160BM | Crucial.com
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Apple Certified Crucial 8GB Kit (4GBx2) DDR3/DDR3L 1600 MT/s (PC3-1280 – Dealm4kers
Apple iMac 2011 Memory 4GB DDR3 1333MHz PC3-10600 204-Pin
