Thanks Mike, with 12v applied to them and the usb cable connected I have tried it on 4 PC's 3 with windows 7 and 1 XP, when I plug either unit in I don't get anything at all from the PC, no connection on the Manager and the PC doesn't make the normal USB ding dong noise when I plug something in, its like they are invisible. Ethernet light connects fine when I plug it into a router np, tried plugging the ethernet into the laptop direct to see if it gets an IP and it does but its not a local IP that I can use a WEB Interface to connect to, its got some 169 IP address which I can ping but not connect too.