Upgrade your iMac's RAM in less than 5 minutes - YouTube
Memory Upgrades for Apple iMac 2011 Up to 32GB
install - Installing and Upgrading Ram on a mid 2011 iMac (different size RAM) - Ask Different
Picked up this iMac (27", mid 2011) i7 @ 3.4GHz , 16 gb ram , 256 SSD in excellent condition for $210. Should I make any upgrades ? GPU, bigger SSD? Thanks : r/LukeMianiYouTube
How to Upgrade iMac RAM (21.5" and 27" Aluminum): EveryMac.com
How-To: Boost your Mac's speed and prolong its useful life with easy RAM upgrades - 9to5Mac
How To Upgrade RAM in a Mac | Macworld
How to upgrade RAM / Memory on a 2010 iMac Core i3 i5 i7 (21.5in & 27in) - YouTube
Install memory in an iMac - Apple Support
Install memory in an iMac - Apple Support
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
OWC 16GB (2x8GB) ram Upgrade PC3-12800 DDR3L 1600MHz sodimm 204 Pin CL11 Memory Upgrade Kit Compatible with Late iMac, Mac Mini, and MacBook Pro Computer at Amazon.com
Install memory in an iMac - Apple Support
How to Upgrade iMac RAM (21.5" and 27" Aluminum): EveryMac.com
Install memory in an iMac - Apple Support
How to Upgrade RAM on MacBook Pro, iMac & More | AVG