As this was a new build with no other important software onboard, I wiped the system drive and did a clean install of Windows 10 20H2. Followed the set up instructions and installed the VHS to DVD 3 Plus software and hardware. According to the manual the hardware uses a USB 2.0 port so I plugged it into my front panel USB port. This was adequate to load the drivers but was not recognised when running the software. Just the usual "no signal" message. Out of desperation I plugged it into the rear USB 3.0 port and everything works perfectly. I don't understand why the PC "sees" the hardware in order to recognise it and load the drivers but not to "see" the signal. At least it works.