SeeedStudio BeagleBone Green (BBG) is a low cost, open-source, community supported development platform for developers and hobbyists. It is a joint effort by BeagleBoard.org and Seeed Studio. It is based on the classical open-source hardware design of BeagleBone Black and developed into this differentiated version. The BBG includes two Grove connectors, making it easier to connect to the large family of Grove sensors. The on-board HDMI is removed to make room for these Grove connectors.
for more info, please refer to http://wiki.seeedstudio.com/BeagleBone_Green/