https://bugs.winehq.org/show_bug.cgi?id=52340
--- Comment #2 from Esme Povirk madewokherd@gmail.com --- I'm confused by Mono's SerialPort class. According to MSDN, this method is supposed to control how many bytes need to be in the buffer before the DataReceived event fires. There is an internal OnDataReceived method that fires this event, but I can't find anything that calls that method.
I expect that if the program is using this, it probably needs it to work.