PayJunction Smart Terminals require that they are connected to the network via an ethernet cable. If there are no longer any available ports on the router or wall, installing a Network Hub or Network Switch will solve this issue.
Network Hubs and Network Switches
Network Hubs or Switches are affordable and easy to use. Simply plugin an ethernet cable from the router or wall port, and plugin the other end of the cable to the incoming port on the Hub or Switch. Then, use one of the available ports on the Hub or Switch to plugin the Smart Terminal. Essentially, a Hub or Switch extends the connection from your router or wall port, to the Hub or Switch, giving you more available ports to work with.