How to connect iMac as an external PC monitor?

Question

Computers

I have a PC, I want to make an iMac as a monitor, is it real? I can't find any devices. You need to connect through thunderbolt!

Answer 1

Not all and not always, but you can: "Note: Target monitor mode is not supported on iMac models with Retina display. Only iMac (27-inch Late 2009), iMac (27-inch Mid 2010), and iMac (with mid-2011 to mid-2014) support target monitor mode." according to the link that you have already been given, everything is written https://support.apple.com/ru-ru/guide/mac-help/mh3...
Personally, I am an imac 2010 mid, connected to a regular PC with Windows with a DP-Mini DisplayPort cable (only for some reason, when I connected to the built-in DP in the motherboard, when working in Photoshop, the monitor crashed, I solved the problem by connecting it to the Nvidia Quadro 310, I didn’t have other video cards with DP)

Answer 2

Let's pick it up from the bottom. Could you tell me what version of macOS you have this implemented on? There is a suspicion that after 10.13 the function is not available.