Seneca S107USB RS485/USB Portable Serial ConverterRS485 USB Portable Serial Converter S107USB is an interface able to implement a RS485 serial port by using a PC USB port. The available drivers will recognize the serial interface as a standard serial port; so the use of the product is directly allowed through any software able to communicate with the standard serial ports of the operating system (COM1, COM2, etc). RS485 and USB ports are isolated from each other at 1500 V. supply connections.