How I kept my iMac running for a decade | Cult of Mac
Installing additional SSD in Mid-2010 27" iMac
iMac 27" mid 2010 working fine with Patched Sur : r/BigSurPatcher
How to Upgrade the Main Drive in a 27-inch iMac Mid 2010 (Updated) - YouTube
Amazon.com: DBTLAP Laptop CPU Fan Compatible for Apple iMac 27" A1312 Compatible for Delta BFB0812HD-HM01-9B99 610-0035 069-3742 Late 2009 2010 Mid 2011 Optical Drive Fan Cooling : Electronics