If you need GPIO, I see some mini or smaller ITX mobos available[1], though I don't know how painful it is to get working... 1: http://www.mini-box.com/Jetway-

If you need GPIO, I see some mini or smaller ITX mobos available[1], though I don't know how painful it is to get working... 1: http://www.mini-box.com/Jetway-JNF9D-2550 http://www.mini-box.com/Jetway-JNF9D-2550