Hello, Please help I have a mid 2007 I got from surplus, upped the ram to 4, found out programs need at least 10.7 and it had 10.6.8 and the only free upgrade was Yosemite. I downloaded it. Now I am trying to get the mac to recognize the smartboard. Notebook is installed. Also I have an infocus projector that I need to get set up. Plugged in the USB for smart board and the monitor cable for the projector. Go to display, check mirror, but nothing displays on the smartboard from the projector.