Yes it can.I haven’t thought about an actual monitor yet, but was more interested in the idea. I have a 2017 iMac 27-inch. It’s the one with two TB3 ports on the back. I’m using one of those TB3 ports as a USB-C port for an external drive, so was wondering whether the other one could be used as a monitor out port.
yes.. it just around 25 dollar connector usb-c to hdmi. I also attach earphone to my samsung 21 monitor so i don't have to tweak sound between internal imac sound and earphone.. Before it dam annoying.Has anyone used a second display with their iMac? If so, is it connected via the Thunderbolt interface and is it literally plug and play?