@phaedrux
Thank you for the swift response.
Please find answers to your questions below.
Do the LEDs on the ethernet port at either end come on when a cable is connected? No.
When you connected the Duet ethernet port and the laptop ethernet port was a static IP address set on both? No, it just shows a dead Ethernet connection between the Duet & Laptop Ports on the Network Connections.
Have you tried reseating the ethernet module on the board? No, However I just attempted to wiggle the Ethernet module a bit on the Board and now the left Amber LED is solid while the right Green LED is blinking; Once every second then twice in succession on like the 12th & 13th blink. Is there a diagnostic page to decipher what these LED lighting pattern means?
Does the Duet obtain an IP address successfully? Yes.
If all that is futile, Please send an email to warranty@duet3d.com and CC your reseller. Include a link to this forum thread and the details of your original purchase. You'll receive a reply with a form to fill out.