Want to use an iMac as an external monitor? You need an old version of macOS | Macworld
iMac 27" (Late 2012) display connection to Macbook Pro 13" (2017) - YouTube
How To Use an iMac as a Monitor for a PC
Apple iMac 21.5-inch (December 2012) review: The smaller iMac Windows PCs can pick on - CNET
Review: 21.5-inch 2012 iMac takes two steps forward, one step back | Ars Technica
Apple iMac: Complete redesign incoming alongside a cheaper external monitor option, but Face ID must wait for a later iteration - NotebookCheck.net News
Using an iMac as a Monitor Is More Complicated Than You Might Think
How to use Apple iMac as External HD PC Monitor |Target Display/Disk Modes - YouTube
How to Use iMac as Monitor for PC [3 Cases]
Use an iMac as an External Monitor - YouTube
Use iMac As Monitor for PC? How Does It Work?
Instructions: Use the iMac as a Windows PC monitor »Sir Apfelot
2012 21.5-Inch Apple iMac Review: Slim, Sleek, And Stylish, But Far From Shallow | TechCrunch
How To Use an iMac as a Monitor for a PC
Step-by-step Guide to Use iMac as an External Monitor for PC/Mac
2012 imac with new external display - mir… - Apple Community
How To Use an iMac as a Monitor for a PC
How To Use an iMac as a Monitor for a PC
Old iMac as a monitor - instructions for screen synchro »Sir Apfelot
Use your iMac as a display with target display mode - Apple Support
Apple iMac 27-inch (Late 2012) - Review 2012 - PCMag UK
Apple iMac 27in (2012) Review | Trusted Reviews
How To Use IMac As A Monitor For PC
Old iMac as a monitor - instructions for screen synchro »Sir Apfelot