Problem displaying two Monitors...Help!

I just recently purchased a Plugable USB 2.0 Display Adapter so I could hook up a second monitor to a desk top computer. I have 2 other ones that work fine but this one will not display anything on the second monitor. If I unplug the cable it tells me the cable is disconnected. When it is plugged in the screen goes black. Any suggestions on how I can get it to work?

For the benefit of anyone who is interested:

Brian also contacted us via email at and let us know that installing DisplayLink 7.7 M2 driver fixed the issue and that everything is working well now.