I have two Dell monitors that have DVI inputs, currently I have one connected to my HDMI port and still have the VGA port free (as well as the USB 3.0). How do I connect a second monitor to work off of? Is there anything that I will need to purchase? I tried picking up a DVI Female to HD15 VGA male adapter that I ran a cord to from the monitor, but the second monitor didn't display anything. I tried windows+p and couldn't get anything on the second monitor. When I changed the HDMI cable from one monitor to the other the monitor worked, but still one at a time. Any suggestions would be appreciated. Thank you.