Hi, I am starting to look at communicating with a USB interface which I understand behaves like a serial device. I am now looking at documentation and sample code to help me do that. I found some documentation, but it's all in the "archive" section of the developer documentation, which to me looks like it's more or less out of date. Did I miss something? What would be some suggestions to start learning about doing that? FWIW, I would like to communicate with some marine NMEA USB interfaces. NMEA 0183 but NMEA 2000 too. The ones I have are made by Digital Yacht and Yacht Devices. Thanks JD