Hi Kurt,
A couple of things I can suggest to try, as I do not have any information from other users of use "this" listing to connect to the 478.
One make sure you are
updated to v5.08, THEN also make sure you have installed the
Additional Garmin USB Units patch. (This will add in several Garmin USB listings in the GPS Setup in Offshore Navigator Lite.
Once these are both installed, try using the GPS Setup Wizard, very often the software will detect a non listed Garmin device as one that is listed, possibly the 276C USB.
*If anyone does have some useful information or successful connections with this device, please take a moment and post. – Thanks*
-Michael Bogannam
Technical Support Rep.
