The charts are locked to the specific SD card and if you copy them to another blank card, it will not work in your plotter. You don't get a CD or DVD - just the SD card and that can be moved from one plotter to another at will. SD cards do include their own security mechanism (that's what the S stands for) - and the current Garmin charts rely on that instead. You can do away with the USB cable and let Mapsource write directly to the micro-SD card using a suitable adaptor on your PC, but the result is still locked to the plotter. Some of the more recent Garmin hand helds took micro-SD cards, but still locked the charts to a specific plotter. If you take the memory stick from one plotter and move it to another after you have uploaded the charts in this way, it will refuse to work. You use the Mapsource programme on your PC to load charting data into the plotter via a USB cable and the unlock code for your plotter is stored in the configuration files of Mapsource on your PC. Garmin charts are locked to either a specific plotter (in the case of the older plotters that took proprietary Garmin memory sticks) or to a specific SD card in the case of the more modern product range.
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