So I just got all my cameras run, have the OptiPlex with dual NIC installed. Blue iris is installed. Before I add to blueiris I wanted to setup the dual NIC as recommend here for security. I am reading this thread Dual NIC setup on your Blue Iris Machine but am curious if the only ethernet wire that I need running is from the 2nd NIC card into the POE switch. Do I leave the original ethernet port empty? Or do I need to still run that into the switch for internet access?