Must admit that I was confused about the device and PC addresses at first when I fitted my UC300ETH. I set the addresses the wrong way round as well. And that's after a working life in IT and a lot in IP networking! I think that the manual is a little bit ambiguous and as long as you read it the right way - or have done it once and see what they mean! - it's OK. Anyway, good that it's working, and don't feel bad about getting it wrong. Now, where's the red face icon when you need it?