This will be required for any 3 5 or 2 5 drive.
Imac 2015 ssd thermal sensor.
I would have had to use the sensor anyway as the new drive is mechanical but if you ve purchased an ssd prior to 2015 that you wish to swap in use the temp sensor.
This hack fix bypasses the hdd temperature sensor in order to fool imac into thinking that hard drive is working at normal temperature.
If you are upgrading the main bay in any imac late 2009 current besides the 21 5 2013 2013 imac you will need the owc thermal sensor cable.
All i needed to source was the sata power cable.
I also replaced the pcie ssd with a samsung nvme 1tb unit with an adapter this also works perfectly.
Imac hard disk removal imac ssd upgrade thermal sensor link posted under description imac 27 harjindersidhu sidhudiy easysteps use screwdriver t8x50.
The imac hard drive has an integrated temperature sensor the imac fans will run at full speed if you replace the hdd without the temperature sensor and or proper connector.
I have fitted a 1tb wd blue ssd to my late 2015 imac 27 it had no hard drive before just the pcie ssd.
Also this version of the 27 imac imac14 2 doesn t have the emmc slot on the logic board so i couldn t get say a 64gb emmc drive to do the fusion drive upgrade.
If you are installing an ssd to replace the hdd on imac 2013 and later you don t even need the thermal sensor cable from owc because the heat info will be read through s m a r t.
I did not fit any thermal sensor and it works perfectly no fan spin or any other problems.
I would use this as a workaround and stil.