How do I know if a listed COM port number is used by a USB device?

[jaybeev]

Hi,

I am using serial cables and USB-to-Serial adapter cables. When I connect them to the PC, my application detects them and lists them as serial ports with COM numbers. I used SerialPort.GetPortNames() to do this.

At any time, I may have both serial and USB cables connected. My question is, if I have a list of several ports (COM ports), how can I determine if the COM port is actually a USB device?

Thanks.

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