Both of my laptops the Panasonic CF-19 and the CF-31 have a onboard COM-port. But my LM-2 does not operate using these COM with the VCM Scanner v 3.4.42. Channel names for AFR and status disappeared as soon as scanner began logging. Why is this so? I have to apply any special settings or special COM number for the onboard COM? Or a onboard COM will not work and I need to buy a USB-to-Serial adapter?