I had to download free serial port monitor software to check the flow of data through a COM port. I have a very old computer and sometimes wish I could still use it without having to use adapters. It is so slow that there is no way I can use it on the internet.
Such a shame to have something sitting around that could be used but cannot due to technology surpassing it. I had to break down and buy a new computer for all my daily internet usage. I am an internet junkie, so having a computer that can handle the web was a priority for me.