Best posts made by genseric

I thought I'd follow-up on this post as I hate when people leave the thread hanging. I received my new (genuine) ethernet module from the US - I have plugged it in and everything is working as it should be. This is a timely lesson to me as I was getting lazy in turning off my duet when switching out hardware (fans in this case). I think I got off extremely lightly!
Thanks again for the help.

@Phaedrux My apologies for sounding impatient. You guys are always so professional and patient. I watched replies happen all around my post and thought that maybe it wasn't worth a look in from you guys (mistakenly so).
I have a new duex 5 and is is being recognised by the diagnostics. Success.
I am having trouble getting my extruder steppers to work but I will start a new topic as this one is solved!