Hello boys. Just got my K2cnc 2514, a couple of questions. First, on the control box there's two connection points one is a std. printer cable type and one is USB. I can easilly see where the printer cable goes, but where does the USB go, to the USB port on the computer also. Connect both? I don't need another component do I? This electronics stuff numbs my mind. Once I get it straight I'll be OK. HELP !!!!!!!