I have a Mitusbishi 2040u monitor that has dual inputs(Dsub, BNC)-I know that the hardware card has a pass-through cable that, when hooked up to your video card, degrades the image of the video card. I currently have my video card hooked up to the BNC conectors-can I not use the pass-through cable and connect directly to the dsub connector on my monitor-I can switch between the 2 inputs with a button on my monitor.