Ethernet Shield LAN W5100 for Arduino

The W5100 ethernet shield allows your arduino to connect to the internet via an ethernet cable. The shield features a Micro SD card slot capable of storing files for serving over the network. The W5100 supports up to 4 simultaneous socket connections, and provide a network IP stack capable of TCP and UDP.

Compatible with Arduino Duemilanove, UNO, Mega, 1280, 2560

Network (IP) stack capable of TCP and UDP

Micro SD card slow

Wiznet W5100 ethernet chip

Supports official Arduino ethernet library