I can see in the position output a USB to PC and a baud rate. I am guessing this turns the usb port on the reach to serial for output of the solution. I tried this while it was powered from my laptop. My computer never saw the reach. Have I misunderstood what this does?
I have never tried what you are trying to do myself, however based on what I have read on this forum, you need to have an adapter similar to the ones I have listed below. The adapter converts TTL voltages (~3.3 volts) to USB voltages (5 volts). I would first check to see if the adapter you want to buy is compatible with the OS running on your PC (i.e., drivers are available or built into OS).