This handy RS-232 to Ethernet interface board is based on a pre-programmed PIC18F87J60 microcontroller with on-chip Ethernet interface and also features the 3.3V regulator, transformers and passive components required for its operation and connection to an Ethernet network. Simply plug into a solderless breadboard or connect to your prototype circuit and communicate with it via the TX and RX lines of your microcontroller's UART interface for instant Ethernet communications.