Ethernet Shield W5100 R3 Mega 2560 1280 328 UNR R3 only W5100 Development board for Arduino for UNO Shield

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This Ethernet Shield which is based on the Wiznet W5100 Ethernet Chip gives you an easy way to get your for Online. It is directly supported by for official Ethernet Library. It adds a micro-SD card slot, which can be used to store files for serving over the network. It is compatible with the for Duemilanove (168 or 328), For Uno as well as Mega (1280/2560) and can be accessed using the SD library.

The Wiznet 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.