This is a simple breakout board for the Lantronix XPort Direct embedded ethernet module. Plug in your module and a 5V-12V power source, our board regulates down to 3.3V and gives you all of the signals on a 0.1" spaced header. Perfect for breadboard prototyping.: 1.8x1.45" (45.7x36.8mm) Project description, more information and ordering can be found at https://www.sparkfun.com/products/8874 XPort Direct User's Guide: http://www.sparkfun.com/datasheets/BreakoutBoards/XPort-Direct_UG.pdf