How many external displays on 2019 iMac?
I have two 1080P TVs and a projector to connect up... Could I use a USB3 A to HDMI to connect the last device?
You may want to give AppleCare a call on that one.if it is not supported directly contact www.macsales.com and the can help you get the hardware to make it work. They specialise in Macs and have great support. You can find their phone number on their home page.