If you want to view the navionics chip on the pc you can follow the link and down load one of the depth finders. If you have a lowrance you will know how to get the maps up. Works like a champ....Sorry, I got ahead of myself. First you will need a card reader. then download a unit that has gps. Go to menu..Map data...Then navionics map choice. click to the right so you can see what map you want. Hit enter and wait for it to load.. I use the lcx-19c all the time
http://www.lowrance.com/Downloads/Em...s/default.asp:)