You seem to be a bit confused. The port to the extreme left is an HDMI video port (using an HDMI cable). The other 3 ports are Display Ports (DP) which use a DP cable. They are all graphic ports but using different cables and NO do not just "jam" something into the DP ports. This Hello Tech page has an explanation about the graphic ports.
I bought a second monitor to hook into my computer and it seems like I only have one display port. For those of you who have an xps 8950 does that seem correct? My other other question is, to the right of the display port there are 3 slots that I have no idea what would plug into. They are too big to be USB ports so I'm hoping they are display ports that just look funny but I don't want to jam in my plug if it's not the right place for it.  Thanks for reading! [IMAGE]Far left - display port. What are the others?
XPS 8950, mystery slots