I purchased the optional software and download cable for my FX2, but I do not have an available serial port. Can I use a USB port and a USB to serial adapter?
We have tested the model GUC232A USB to Serial adapter from IOGEAR, which can be used to connect to an available USB port. After installing a USB to serial adapter, you will need to know the number of its COM port. Navigate to the Windows Device Manager, select “Ports” and note the COM port number assigned to the adapter. Launch the Vehicle Performance Tools application and select the Serial Connection tab. Then select “Show Serial Communications Activity.” Click on the COM port that matches your USB adapter COM port number. If you have a G-Timer connected to the COM port and it is turned on, the Vehicle Performance Tools software will confirm that it sees a working FX2 on the COM port.