Mini W5100 Ethernet Network Module Board For Arduino

You can choose a variety of interfaces: direct bus, indirect bus and SPI bus
Support for hardware TCP / IP protocol stack, support TCP, UDP, ICMP, IGMP, IPv4, ARP, PPPoE
Up to four independent ports
Internal integration 16 kbyte transceiver cache
A variety of information outputs, including the RX, TX, Full / Duplex, Collision, Link, Speed
Support auto-polarity transformation (DMI / MDIX)
3.3V power supply, IO signal compatible with 5V voltage
It comes with Ethernet port, 2 * 14 2.0mm double row
Compatible the official Arduino Ethernet library