I need help finding one that will work in this unit,I tryed the navionics web page they say that ,hot spots is the one in the compatibility chart had marked.but in the bass pro shop web site under navionics hotspots prem,in the reviews section a guy said that the 480 had to be reformatted like 2 pages whorth.I know this is an old unit, will it take an old card ?any help would be a great help. the basic maps already on it may be all I need :confused:
