I want to connect dual monitors to my Dell XPS 15 laptop. My laptop is having 3 USB ports and one HDMI port (no VGA). I have already read the following post Connecting 2 External Monitors to a Laptop? but my situation is a bit different. I have no VGA output but 1 HDMI an 3 USB ports only as output, so how can I connect dual monitors with my laptop without having them clone each-others display?