Ethernet Shield Development Board for W5100 Mega 2560 1280 328 Arduino Features: With this Ethernet Shield, your development board can be used to connect to internet. Can be used as server or client. Directly plug puzzle board, no soldering required. Controller: w5100. This is the latest version of the Ethernet Shield. This Ethernet Shield which is based on the for Wiznet W5100 Ethernet Chip gives you an easy way to get your development board Online. It adds a micro-memory card slot, which can be used to store files for serving over the network. It is compatible with the (168 or 328), for Mega (1280/2560) and can be accessed using the memory card library. The W5100 provides a network (IP) stack capable of both TCP and UDP. It supports up to four simultaneous socket connections. Use the Ethernet library to write sketches which connect to the internet using the shield. Fits all version of Main board, for Mega 1280, Mega 2560. Package Included: 1 * Ethernet Shield Development Board