Amazon.com: HiLetgo W5100 Ethernet Network Shield W5100 Ethernet Expansion Board with SD Card Slot for Arduino UNO MEGA2560 : Electronics
Amazon.com: Ethernet Shield WizNet W5100 R3 Network Lan Board UNO Mega 2560 Duem for Arduino : Electronics
Amazon.com: HiLetgo W5500 SPI to LAN Ethernet Network Module TCP IP STM32 Interface 3.3V 5V for Arduino WIZ820io RC5 : Electronics
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 w/MicroSD Card Reader for Arduino
BXV Shield Ethernet Shield W5100 R3 For UNO Mega 2560 1280 328 UNR R3 only W5100 Development board For Arduino - AliExpress
Amazon.com: Mini W5100 LAN Ethernet Shield Network Board Module for Arduino R3 W5100 3.3V Compatible for Arduino Ethernet UNO Mega 2560 : Electronics
Arduino UNO Compatible Ethernet Shield - PiShop.us
Amazon.com: Tolako Ethernet Shield W5100 R3 Network Module for Arduino UNO Mega Support PoE : Electronics