A ribbon cable is used to connect the Triad with an Arpitecht. It is not possible to use the expander without its big brother.
Three note outputs (1 V per octave), new trigger output
CV inputs for triad and inversion parameters
A connector for the ribbon cable used to connect Triad and Arpitecht can be found on the back of the module.
3U Eurorack module, 4 HP wide, compatible with Skiff cases