This is a crucial piece if you want to connect your Arduino to the internets. This PCB can be used in conjunction with some headers, a few discrete components, and a WIZNET module to work as an Ethernet shield for an Arduino.
This is a loose PCB from the Adafruit Ethernet Shield Kit.
If you'd like to add your own parts here's the parts list. Which we mostly carry in stock.
Has pads spaced out to interface with either an XPort, XPort Direct, XPort Direct+ or WIZnet 811MJ Ethernet Module.
Use this shield when you'd like your Arduino or Freeduino to be connected to the Internet. With it you will open up yourself to a wider new world of possibilities for what you can interface your microcontroller to. Want your Arduino to check email? How about sending a twitter (which can then be easily forwarded to a phone via SMS)? Or grabbing data from a website? Or serving up sensor data world-wide? There are so many possibilities for projects that connect to the Internet to get data, now that there's an easy way to do it with an Arduino + Adafruit Ethernet Shield PCB v1.2.