Amazon.com: DEVMO W5100 Ethernet Network Shield LAN for Ar-duino Expansion Board Module with SD Card Slot Compatible with Ar-duino UNO MEGA2560 UNO R3 ATMega 328 MEGA 1280 : Electronics
Ethernet Shield for Arduino – a walkthrough | alselectro
Arduino Ethernet Shield | Arduino Documentation
Amazon.com: DEVMO W5100 Ethernet Network Shield LAN for Ar-duino Expansion Board Module with SD Card Slot Compatible with Ar-duino UNO MEGA2560 UNO R3 ATMega 328 MEGA 1280 : Electronics
Amazon.com: HiLetgo W5100 Ethernet Network Shield W5100 Ethernet Expansion Board with SD Card Slot for Arduino UNO MEGA2560 : Electronics
Getting Started with the Arduino Ethernet Shield. | Arduino Documentation