I have an HP elite 8000 desktop and I'm setting up my printer on it. I need Com port 3, on my computer there was an Intel something on com 3, so I uninstalled that and tried to use com port 3, but I keep showing a PCI serial port popping up in my Device Manager. Unplugged the serial port from the mother board but it keeps showing up. And I have a feeling this is causing me an issue with installing my printer. Can someone tell me how to remove this from my system or turn off this PCI serial port.