Garmin manufactures several lines of global positioning devices. Garmin also provides free maps and updates to owners of Garmin devices. Installing the free maps and upgrades requires that the Garmin Communicator Plugin is installed for use with your Web browser. Once the plugin is installed, you can connect your Garmin device to a computer using its USB cable, and the Communicator plugin will automatically find free maps and install them to your Garmin GPS unit.
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