GPIO - breakintoprogram/agon-docs GitHub Wiki
What is GPIO
GPIO, or General Purpose Input and Output, is typically an electrical interface on a computer that is not dedicated to a single task. On the Agon this is exposed as a series of 32 pins arranged in a 16 x 2 matrix on the rear of the Agon opposite the VGA and power connectors.
GPIO Pinouts
Viewed from the back, component side up, with the connector to the right of the board.