Don't confuse Network (Ethernet) with NMEA 0183 because they are not the same thing. The NMEA 0183 is on the power data cable and the Network is the RJ45 port. The pin out for the power data cable showing the NMEA 0183 colors is on page S-1 at the back of the manual. You do NOT want to wire your network RJ45 to NMEA.