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Using an Advantech ULI-224TC RS-232 to RS-422/RS-485 converter. From the Advantech converter DB9 I'm going into my laptop with a serial to USB adapter that has driver installed.
Npcap's driver only captures on network adapters, i.e. devices that connect to the Windows network stack via the NDIS interface.
A serial device would be a network interface only if a Point-to-Point Protocol (PPP) session were being run over it. Without that the adapter would probably show up as a COM port.
I use this adapter on several other applications and it works well.
Those application are probably using it as a COM port, rather than as a networking port.
What kind of device is connected to the serial port?
