This is a breakout board to allow simple access to the tightly pitched pins on the GS406 and GS407 GPS units. This board breaks out all of the necessary pins to a row of standard 0.1" spaced header to allow for easy bread boarding and simple connection. Project description, more information and ordering can be found at https://www.sparkfun.com/products/10496 Datasheet: http://www.sparkfun.com/datasheets/GPS/GS407-090812.pdf