The USB Serial Converter SER is a converter from USB 2.0 to RS422 and vice versa. The device was designed to interconnect professional equipment like GPS or Speed Log to laptops or office computer. Operating power is supplied via the USB port. The RS422 interface is designed according to IEC61162-2 and is galvanic isolated from the USB port. The USB to SER can also use as ModBus to USB converter.