The older system has a USB 3.1 port -- not a Thunderbolt port, which is what the newer system has. You'll need a display adapter for the 3.1 port in order to connect a monitor to it.  These exist for HDMI, DVI, displayport, etc. - you'll need one that matches the monitor input you want to use.  
Dear, I face a problem with the 2016 Dell Latitude 12 7275. I tried connect it to Dell U2720Q monitor via USB Type-C cable. Nothing happened on U2720Q and a notification shows that USB Type-C cannot recognized. This USB Type-C cable comes along with Dell U2720Q. I tried with another laptop (2019 Latitude 7400 2-in-1 Thundebolt 3/USB 3.1 Gen2/USB Type-C) with the same USB Type-C cable and it worked normally. Does Thunderbolts 3 cable work? Or any suggestions for me? I am really appreciated. Thank you.
Latitude 12 7275, U2720Q, USB Type-C no video