|The COM ports are the older type serial ports--not USB ports. COM ports are 9-pin and trapazoid shaped, kind of like the VGA port but with 9 pins instead of 15.|
I have no idea what your logger hardware looks like but if it's made to connect via USB then it should have a regular USB connector. If it has a 9-pin serial port connector then (assuming your PC has a serial port) that's what you should use. If you're using a serial-to-USB adapter to connect a serial cable to a USB port, well that might not work. It would depend on if you can direct the software to look for a USB port.