You can temporary Install iGO8 and go to "Menu" >> "Settings", and scroll to "GPS". If the message is GPS receiver is connected", un-tick the "GPS Enabled" box and then click on "Autodetect". Wait for the scanning to complete and then click on "OK' where it says "GPS receiver has been detected successfully. On next screen click on "GPS" and read the "Port" and "Baud Rate". (in greyed out slots). Now you have the values which you can use in Primo (you must enter it into a sys file)