currently have a 27" imac flanked by two 27" Dell (S2721HSX) monitors. Unfortunately I can no longer get office updates, so I ordered a mac Mini, hoping to add a third Dell monitor. Currently I'm running DP to Thunderbolt 2, looks like on the Mac Mini I can run three Dell monitors, via DP to USB-C/Thunderbolt 4, is that correct? Any other options I'm not aware of? I know in the past HDMI, VGI, etc. were not compatible, but the S2721HSX is discontinued, so need to make sure I buy something compatible. I sure wish I could use my iMac simply as a monitor, why did Apple block this?