I have a Dell XPS 8700 with the additional HDMI slot that is covered. I have 3 monitors, one hdmi, one dvi and one vga attached. I would like to add a fourth monitor but when I test the covered hdmi slot by plugging the hdmi attached monitor into that slot, I get a big long message. Is it possible to add a fourth monitor using that port? I have used a small fourth monitor through USB, but the system sometimes goes temporarily dark. I am a trader and need a very dependable 4 monitor setup.
Thank you in advance.