Just an idea . . . Without doing any further analysis, I would highly recommend that you get rid of the Prolific cable and replace it with a cable based on another driver such as FTDI. I have experienced nothing but trouble with Prolific drivers.
Just an idea . . . Without doing any further analysis, I would highly recommend that you get rid of the Prolific cable and replace it with a cable based on another driver such as FTDI. I have experienced nothing but trouble with Prolific drivers.