ract wrote:
... I want to use one of the ports to connect a printer that ... .does have an Ethernet port ... (the LAN Ethernet ports on the router are used up); maybe I will try an Ethernet switch ...
That's exactly what you should do. Buy a good quality Gigabit Ethernet switch with as many ports as you need (and then some), and simply plug your existing equipment, including the new printer, into the device. I am currently using a 24 port switch that's almost filled up, and the system works perfectly.