It's powerful, it's portable, it's Pro! We're continuing our Pro series of Arduino-compatible micro-controllers with the addition of the Mega Pro. This is a 3.3V microcontroller running a version of the stk500v2 bootloader at 8MHz. Just like the other Pro-series boards this board is built with all SMD components and comes with no headers populated in order to minimize the cost and the board profile. Of course this board has the same pin-configuration as the Arduino Mega so it is dimensionally shield compatible (but do keep in mind that this is a 3.3V board unlike the Arduino Mega). Project description, more information and ordering can be found at https://www.sparkfun.com/products/10744 Datasheet: http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Components/General IC/2549S.pdf Board Definition Files: http://wiki.wiring.co/wiki/SparkfunHardware Board Definition Files: http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Dev/Arduino/Boards/mega-pro-3.3V-v11.zip Board Definition Files: http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Dev/Arduino/Boards/mega_pro_3.3V.zip