Connect a CAT-5 Ethernet Cable from the printer to a Router or direct to the computer (only if you are not using multiple computer stations)

MAC & PC:  Download Epson Net Config program to search the network for printers (found on Epsons web site under the support page for the printer you have)

Updating your IP Address:

MAC - Subtract the printer from the printer list and ADD printer.  After you click the + button to add the printer, choose the IP Icon at the top of the add window. Type in the IP address of the machine (found either on the panel of the printer or through the Epson Net Config software.  Name the printer and choose the driver software (computer should do this automatically).   click ADD at the bottom right of the window.   Restart any open programs and resend the print.

PC - Go to "Devices and Printers" on your computer.  right click on the printer, choose "Printer Properties", then choose "Ports",  Then look for the port address that was given from Epson Net Config and check and apply the selection that matches the IP.  If there is no setting that matches the IP address, click "Add Port", Then choose Standard TCP/IP Port, Click New Port...,  Go through the wizard software to add the port.  After Adding the port make sure to select it on the Ports page and hit "Apply" to activate the port.  You should see the printer name populate after you hit apply.