With the W5100 Ethernet shield it is very easy to design internet connected circuits and to build the internet of things. It is based on the W5100 ethernet controller which provides an implementation of the network stack (IP) with TCP and UDP capability.

This shield is compatible with Arduino and it also includes an SD card slot, connected to the same SPI bus as the W5100 ethernet controller.

Specifications

• 10/100 Mbps compliant
• Hardwired TCP/IP stack
• Supports TCP, UDP, IPv4, ICMP, ARP, IGMP and PPPoE
• 3.3 V operation, but 5 V I/O signal tollerant
• 16 KB buffer

Software

• Arduino Ethernet Library

Note: You can read more about this product on the official Arduino Ethernet Shield page.