I want to connect a 7" USB powered touch screen monitor to the DVI connector on my graphics card. Or use the capabilities of the graphics card. I have a video capture card with 4 cameras (PCI-E) connected to the mother board. If I connect the USB monitor to the motherboard USB port will I be using the PCI-E graphics card or the onboard integrated graphics of the motherboard to go to the USB 7" monitor? I want the cameras and all other graphics to use the GPU card going to the displays. There are 4 displays 2 DVI, 1 DVI to HDMI adapted display and 1 USB powered display (touch screen monitor). Or am I just barking up the wrong tree?
You are barking up the wrong tree.
This is not to be confused with touchscreen monitors that have a video-input (DVI, DisplayPort, VGA) and an USB cable.