The following is a list of actions to configure an ethernet connection to 123.HP.com/Setup. Look first for an Ethernet cable that works with the printer model you have. Pick from the Ethernet and Wired Network options when choosing the connection type. The need for a network router follows.
In the event that the router has port limitations, you will require a switch or hub with open Ethernet ports. Connect the router and printer with an Ethernet cable. The network router can now be connected to your printer.