USB to RS-232/RS-485 Converter RC22 Provides USB Port (Universal Serial Bus) that convert to isolated RS-232 and RS-485 that done not require PCI/ISA slots or IRQS. Simply plug the converter into an available USB port on your computer or hub. Windows will configure the converter as an additional COM Port, compatible with your Windows applications.

            A pair of LEDs show when data is being received or transmitted. USB bus supplies power, so no separated power supply is needed. 2000 VAC of isolation.