Maretron - USB100 NMEA 2000 USB Gateway - USB100-01. Maretron's USB100 is a gateway for bridging computers to an NMEA network. This allows you to use PC based vessel monitoring and control software like Maretron's N2KView or PC based navigation software. The gateway provides one simple connection between the network and the PC, which eliminates conventional multiplexers and the maze of wires usually associated with interfacing equipment to PCs.. Maretron's USB100 is a gateway for bridging USB equipment using NMEA 0183 sentences - such as an on-board computer running navigational software - with an NMEA 2000 network.. The gateway automatically converts incoming NMEA 2000 messages to NMEA 0183 sentences so you can continue benefiting from navigational and charting software that you already own while enjoying the many benefits of networked NMEA 2000 instruments.. The USB100 translates a multitude of NMEA 2000 messages to NMEA 0183 sentences including GPS data, Speed Over Ground (SOG), Cou