Select the connection type for this GPS: COM1, COM4... - Select if your GPS has a serial port (or if you use a USB to serial adapter to connect to your GPS). File - Select if your GPS uses a removable memory card and a card reader. USB - Select if your GPS receiver has a USB port.
If your GPS receiver has a serial port, select the baud rate that your GPS uses.
If you use a USB to Serial Port adapter to connect your GPS, the adapter will include software which creates
a virtual COM port on your computer. Select this COM port in ExpertGPS.
If you own a Garmin eTrex model, select the C model if your GPS has a USB port (Garmin eTrex Legend C, e.g.).