Not everyone is a programmer
Make set up so simple an old computer ignorant person can do it. We are not all sophisticated users.
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Anonymous
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Hello and thanks for your message,
Well, actually you are in luck because there is a step-by-step guide on exactly that on your feedback website (request from your support ticket):
http://mapspro.uservoice.com/knowledgebase/articles/624921-guide-how-to-connect-to-a-usb-gps-globalsat-bu-3
I will add more links to the documentation directly from the interface
Fabien