Mini W5100 LAN Ethernet Shield Network Board Module Ethernet UNO Mega 2560 3.3V Geekcreit for Arduino - products that work with official Arduino boards
MaccaSoft - Software Development, Design and Consulting
Basics: Project 042a ENC28J60 ethernet module or shield at Lex C / ACOPTEX.COM
How to connect your Arduino UNO/Nano to internet using the W5100 Ethernet Module?
Arduino Ethernet Network Module | Sven Hofmann
Arduino connection with Ethernet ENC28J60 module Botland - Robotic Shop
Getting Started with the Arduino Ethernet Shield. | Arduino Documentation
Amazon.com: Tolako Ethernet Shield W5100 R3 Network Module for Arduino UNO Mega Support PoE : Electronics
Ethernet shield for Arduino® - Whadda
Add Ethernet to Any Arduino Project for Less Than 10$ : 4 Steps - Instructables