You can only do this through the wizard, not the advanced setting, and only if you are connecting the Zoom 4501 to the internet via a USB 3G modem. Run through the wizard and on the last page there is a checkbox with the text, "The ethernet port will be used as a LAN port. Confirm?". Check the box and click next, and on reboot the port labeled WAN will actually act as a second LAN port.
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You can only do this through the wizard, not the advanced setting, and only if you are connecting the Zoom 4501 to the internet via a USB 3G modem. Run through the wizard and on the last page there is a checkbox with the text, "The ethernet port will be used as a LAN port. Confirm?". Check the box and click next, and on reboot the port labeled WAN will actually act as a second LAN port.