iMac Intel 21.5" and 27" (Mid 2011) SSD Temperature Sensor
How To Upgrade/Replace Mid-2011 iMac 21.5" Hard Drive To an SSD! - YouTube
How to Upgrade iMac Hard Drive (2009, 2010, 2011): EveryMac.com
iMac late 2009 SSD upgrade : r/mac
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