Hardware interface between Arduino Mega and Arduino Ethernet shield | Download Scientific Diagram
2-CH UART To Ethernet Converter, Serial Port Transparent Transmission Module | 2-CH UART TO ETH
Taidacent CH9121 Ethernet Serial Port Server Serial Port to Ethernet Adapter Single Chip Microcomputer Networking Module Supports TCP CL .IENT, TCP Server and UDP CL IENT, UDP Server Modes