These posting introduce W5500 Ethernet with POE Mainboard and offer a tutorial.
The Arduino Ethernet is a microcontroller board based on the ATmega328. It has 14 digital input/output pins, 6 analog inputs, a 16 MHz crystal oscillator, a RJ45 connection, a power jack, an ICSP header, and a reset button.
Internet of things has become so easy. With Xboard Relay, you can not only monitor data through internet, but also control it through internet. The Xboard Relay combines an Atmega 32u4 microprocessor and wiz5100 chip which is fully compatible with Arduino Lendardo and Ethernet library, it has build-in Xbee socket and 2 Relays which allow an easy sensoring and controlling over internet.
W5500 Ethernet Control Board is a new member of DFRobot Ethernet Family. It integrates ATmega32u4 and W5500 Ethernet chip and can meet requirements of common IoT project.
W5500 and one MCU were integrated in one main board with POE.
This is a cheap and effective relay board, including an ATmega32U4 (same as Arduino Leonardo) and a Wiznet W5100 as Ethernet transceiver.
W5200 DFRduino Ethernet Expansion Board – Deep Blue (Works with Arduino Official Boards)
This Arduino-sized Ethernet Shield is based on the Wiznet W5200 Ethernet Chip, and provides an easy way of getting your Arduino Online.
The XBoard is a unique Arduino board which features a WIZnet W5100, an XBee socket, and an ATMega328.
The Arduino Ethernet Shield gives you an easy way to get your Arduino Online.