I have Lenovo Thinkpad T490 from work and I got my personal iMac 5k 2017. I have got a dell monitor and use that as my primary monitor and want to use iMac as secondary monitor.
I have installed windows 10 on iMac using Bootcamp. I wanted to find out if I can use any sort of cable to connect both. My laptop got HDMI, USB-c charging port. I don’t use iMac as switching between windows and apple keyboard the buttons are different and get confusing, I want to use iMac as my second screen via cable.
So the question is can I and if so What cables do I need?