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
2011 iMac Hard Drive Temp Sensor Explained | This Does Not Compute
ODD fan running full speed after re-assemby - iMac Intel 27" EMC 2429 - iFixit
SOLVED: Why full speed Fan and loudly iMac 27 mid 2011 - Imac27 Mid 2011 - iFixit
Diagnosing iMac Fan Speed Issues After Upgrading Hard Drive
OWC in-Line Digital Thermal Sensor HDD Upgrade Cable for iMac 2011, (OWCDIDIMACHDD11)
2011 iMacs Make It Impossible For You To Upgrade Your Own Main Hard Drive | Cult of Mac
hardware - Where to source replacement internal fans? (For a mid-2011 iMac) - Ask Different
How to properly set SSD Fan Control on iM… - Apple Community
Diagnosing iMac Fan Speed Issues After Upgrading Hard Drive
iMac 21.5 2011 fans at full speed after adding an SSD. | MacRumors Forums