I often get an error with "USB device not regognized" from windows when connecting to the USB version PMs. To get connected I try different USB ports and sometimes in luck, get connected. I have experienced this with several different PCs. (using the latest release of CSP)
I had some experience not to be able to connect non-networked PowerMatch. In my case the cause was an USB cable and I could connect PM with using a different cable. If you didn't try several cables changing a cable might improve that.