I suspect there may be a more logical way to do this... On occasion when I've used Win32::SerialPort I've noticed my scripts would freeze up until I've upped the value of $RBUF_Size. I thought maybe there's some accessor method that would let me do this rather than hacking the library files. After some googling I thought that method was buffer_max, but I didn't quite understand what it was doing inside. Also I was unable to find any examples on how to use that. Is buffer_max what I'm looking for, or is there some other method I could use?