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I’m trying to use an USB device whose type is USBH_DeviceType.Serial_Prolific. It is an RS485 interface. How can I handle it in my code ?




Perfect, it works.
My problem now is to be able to know when data is available and how much. I did not find any event and no method (like BytesToRead for SerialPort object.)
Is there a workarround ?


There are no event. You have to poll for incoming data in a thread. There are few discussions about this on the forum.