Can I use iMac as monitor for Apple TV?
No. But there’s no real need. The iMac can already access most content that’s available on the Apple TV directly through apps or websites, so no real need to try to plug in an Apple TV into it.
Can I use iMac as HDMI display?
No your iMac will not work as a monitor, because iMac’s do not support cabled video input from third party devices. Only certain iMac’s can be used as a monitor for another Mac. Plus only certain third party network devices can use VPN software like ScreenRecycler.
Can a iMac be used in Target Display Mode?
Yes, it worked in target display mode for my 2012 iMac with the addition of the Thunderbolt to Thunderbolt cable. Was this useful? Yes, this option is described in the Apple Support document HT204592 “Use your iMac as a display with Target Display Mode” for Macs that have Thunderbolt 3 ports that want to use an iMac as a display.
Can a iMac be used as a TV?
Everything you need is located in Use your iMac as a display with Target Display Mode – Apple Support including which iMacs work and what cabling is required. I have used AppleTV before and yes it works fine but remember you TV is a TV and not a computer display so you may not like the resolution on the TV. This feature is called Airplay.
Can you use Target Display Mode on a PC?
The short answer is no it will not work, your question is very common and the answer is always the same. Your best bet is to get an external display for your PC. TDM only works Mac to Mac. Here is Apple’s article showing even the limitations on that policy, like newer iMacs not supporting TDM: Windows machines do not support Target Display Mode.
Can a Thunderbolt Display work with an iMac?
Thunderbolt target display mode is not the same as a Thunderbolt display – the source computer requires Thunderbolt and a Thunderbolt target display mode driver that comes only with macOS. A real Thunderbolt display can work with any kind of computer with a Thunderbolt port. For iMac 27-inch, Late 2009 and Mid 2010, use a DisplayPort cable.