At the moment I have used an old hub to get it going, then removed the hub and it has since been functioning perfectly as I expect it to until I need to power it off. Then I'll need to dig out the old hub again.

I confess I've NEVER had any other ethernet device that wouldn't work with any other device - until now with the Rio Receivers which is disappointing.

I'll be taking it up with Netgear though, see what they say.