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WIZ105SR WIZnet W5100 Serial-to-Ethernet Gateway with MAG JACK ($25.30) : Saelig Online Store
W5100 Ethernet Shield V1.0 - ITEAD Wiki
Arduino Ethernet and SD card shield (WIZnet W5100) - Espruino
W5100S-EVB-Pico | WIZnet Co., Ltd.
Ethernet Nano W5100 Ethernet Shield LAN Network Module Board Micro-SD Support TCP UDP for Arduino V3.0 R3 UNO Mega 2560 One: Amazon.com: Industrial & Scientific
Embedded Works - WIZnet EW-W5100 | Embedded Works
Shield Wiznet W5100 R3 Mega 2560 1280 328 R3 Extension W5100 Development Board FOR Arduino Micro SD Card Network Port Module - AliExpress
W5100S Embedded Internet Controller Chip - WIZnet | Mouser
Arduino Ethernet and SD card shield (WIZnet W5100) - Espruino
WIZnet W5100 Network Module TCP / IP Ethernet module [W5100-Ethernet] - US $6.50 : HAOYU Electronics : Make Engineers Job Easier
arduino wiznet w5100 ethernet shield problem - Networking, Protocols, and Devices - Arduino Forum
1PCS Mini W5100 LAN Ethernet Shield Network Module board for Arduino | eBay