Ethernet Shield - W5100

This shield allows an Arduino to establish a wired Ethernet connection to a network and is compatible with Uno, Mega and boards with compatible I/O pins.

KEY FEATURES:

• Compatible with both Uno and Mega footprints
• WIZnet W5100 Ethernet controller
• Standard RJ-45 CAT network connector
• Auto MDI/MDIX (auto cable pin swap)
• Acts as client or server
• TCP/IP protocols include TCP, UDP, ICMP, IPv4 ARP, IGMP, Ethernet
• 10BaseT/100BaseTX Ethernet PHY embedded
• Up to 4 simultaneous socket connections
• MicroSD card slot
• SPI Interface
• 5V compatible, operates at 3.3V internally
• Good library support