Mini W5100 LAN Ethernet Shield Network Board Module Ethernet UNO Mega 2560 3.3V Geekcreit for Arduino - products that work with official Arduino boards
Arduino Ethernet Shield | Arduino Documentation
Ethernet Shield for Arduino UNO Meg
Keyestudio W5100 Ethernet Shield Board with SD Card Slot Original Chip Compatible With Arduino UNOR3 /Mega 2560R3/DUE/1280
Amazon.com: SunFounder Ethernet Shield W5100 Compatible with Arduino UNO R3 Mega 2560 1280 A057 : Electronics
Sintron] UNO R3 board with Ethernet Shield W5100 + PDF for Arduino AV – Sintron Technology
W5100 Ethernet Shield WizNet R3 Network Lan Board for: Arduino UNO, Arduino Mega | Being Patient
Amazon.com: SunFounder Ethernet Shield W5100 Compatible with Arduino UNO R3 Mega 2560 1280 A057 : Electronics
Arduino Uno Ethernet Shield W5100 - RoboMaterial
Sintron] UNO R3 board with Ethernet Shield W5100 + PDF for Arduino AV – Sintron Technology