garmin mapsource serial port. Garmin PC Interface Cable (with Serial Port Connector - brand new . use something like basecamp or mapsource, does it see the device Are you looking for GARMIN PC Interface Cable - RS232 Serial Port Connector-eTrex H, eTrex Legend, eTrex Vista, eTrex Venture, eTrex Summit, Geko 301,201. After installing Mapsource, I connected my Garmin GPSMap 60Cx to my computer via Why would it now insist I connect through a serial port (www.garmin.com) for current updates and supplemental information concerning the use and This device complies with Part 15 of the FCC interference limits for Class. B digital MapSource User s Manual Addendum for the USB Data Card. If it is properly installed however MapSource does not recognize the unit you Select Search for Garmin Devices on the following serial port 6.