A:AnswerIn the front there are two USB 3.1 Gen 1 ports along with one USB 3.1 Gen 1 + Power Share and 0ne USB 3.1 Gen 1 Type-C port. In the rear there are six USB 2.0 ports, three USB 3.1 Gen 1 ports, one USB 3.1 Gen 2 port, and one USB 3.1 Gen 2 Type-C port.
A:AnswerIt has 1 hdmi and 3 display ports. One monitor can be hdmi and the other display port and this should work just fine. You might have to download some drivers at first, I’m not sure since I have mine connected with display port, but there should be no reason for this to not work.
A:AnswerYes, you could add a second GPU to this system. The system has to be opened and the internal part's upgrade has to be done by Dell technical support team. An upgrade or opening the system yourself will void the warranty of the system.