Apple iMac 27-inch (July 2010) review: Apple iMac 27-inch (July 2010) - CNET
Using an iMac as a Monitor Is More Complicated Than You Might Think
Repurposing an Older iMac As a Monitor and Server - Stephen Foskett, Pack Rat
Use iMac as monitor: 5 Solutions - 9to5Mac
A Quick And Dirty Fix For The 27-inch iMac Screen Problem | TechCrunch
Use your iMac as a display with target display mode - Apple Support
Incase anyone ever needs the answer…I have a 27” 2010 iMac working in Target Display Mode with a M1 MacBook Pro using a miniDP to USB C adaptor that's capable of 4k60Hz.
Using 2010 iMac or LED Cinema Display as a Display for Power Mac G5 or 2006-08 Intel Mac | MacRumors Forums
How To Use an iMac as a Monitor for a PC
Identify your iMac model - Apple Support
Mac Setups: 27″ iMac with older iMac and external LCD | OSXDaily
Step-by-step Guide to Use iMac as an External Monitor for PC/Mac
Step-by-step Guide to Use iMac as an External Monitor for PC/Mac
Old iMac as a monitor - instructions for screen synchro »Sir Apfelot