crwdns2934241:0crwdne2934241:0 Dmak

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I believe the thermal sensor is required on most iMac’s, 27” or 21.5” models. Since the fan is acting weird, I’d say its a good bet. I have done SSD upgrades in the past and have realized it’s a crap shoot, some iMac’s require it, while others don’t; honestly I wasn’t able to find a definitive answer especially in the 2012-2013 model years.

crwdns2915684:0crwdne2915684:0:

open