2011 imac 27" 32GB - final stage of 1TB + 2TB SSD upgrade (replaced HDD & optic drive). Also cleaned out the fans and case. Running 'SSD Fan Control' & 'Macs Fan
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maxupgrades.com: Dual SSD Drives kit for iMac 27 inch 2012 Models with Blade SSD Module with Heatsink and Power and DATA Cables
How to Upgrade iMac Hard Drive or SSD 2012-2022: EveryMac.com
21.5" iMac Mid-2014 1TB SATA SSD Upgrade – UKSL MacLab
How-To: Now's the right time to swap your old iMac's hard drive for a fast new SSD - 9to5Mac
How To Upgrade/Replace Mid-2011 iMac 21.5" Hard Drive To an SSD! - YouTube