@Kevin_Z Thank you very much for your prompt and usful reply. I've installed that software OK. The adaptor that's connected to my modem is in the loft, so it's a pain to have to go there when there's...

Help Please: I'm using the NOM adaptors: AV500 I'm trying to install this on to W10: TL-PA4030 PowerLine Utility\ But I get this error message: This version of Windows is not supported by WinPcap...