Will MacGPS Pro work with the eTrex Vista C, Cx and HCx receivers which only have a USB connection?
Yes. These receivers work with MacGPS Pro navigation software when connected to a USB port with the Garmin-supplied cable. You must be running Mac OS X 10.3.8 or later. MacGPS Pro will NOT work with eTrex Venture C, Cx and HCx receivers, so purchase an eTrex Vista or an eTrex Legend model instead if you want to use MacGPS Pro.