The Gateway has two physical NMEA 0183 ports (two inputs and two outputs) with configurable speed from 300 to 115200 baud. This allows organization of data exchange between two devices with different speeds. Multiple physical listeners can be connected to the Gateway's outputs. Both "single ended" (RS-232) and "differential" (RS-422) NMEA 0183 connections are supported. Compatible with COM (serial) ports of PC and with USB-to-serial adaptors.