Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Using iMac late 2013 model as external monitor to MacBookPro Retina Mid 2015 model.

I have iMac 21.5 inch, late 2013 with Mojave OS. I also have MacBook Pro (Retina, 15-inch, Mid 2015) with Catalina OS. would it be possible for me to use my iMac as an external monitor for my MacBook Pro? if so, what cables do I need? Or what changes do I need to make to be able to use that iMac as external monitor?

Posted on Oct 10, 2020 12:29 AM

Reply
Question marked as Top-ranking reply

Posted on Oct 10, 2020 3:06 AM

Use your iMac as a display with target display mode - Apple Support

You need to downgrade the iMac to High Sierra. Install any High Sierra updates. Connect with a Thunderbolt cable.

Apple Thunderbolt Cable (0.5 m) - White - Apple

2 replies

Using iMac late 2013 model as external monitor to MacBookPro Retina Mid 2015 model.

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.