I have own garmin handhelds since 1996, but never a marine unit.
Got a GPS526 in my boat with a bluachart that covers more than i need. So far so good...

But Now I wonder how I can communicate with it by using a computer and a software like I use Mapsource to interact with my handhelds.

Is that possible?

What software to use, Garmin HomePort?

What do I need to hook up the GPS to my computer, it looks like it don't have any serial or USB port, just a wire harness for power, CAN and NMEA, can it be used?

sorry for the noob question but i am compleaty new to this type of GPS.