Abstract: A computer device includes a case, a circuit board disposed in the case and connected with a power cord. The case has a hole group in a side for pins of a connect plate to be inserted and support the cases stacked up. The case is further provided with an upper hole and a lower hole in a corresponding location for a parallel pin receptacle to be inserted and pin sockets to fit in the pin receptacle to electrically connect the computer devices stacked up and supported with the connect plates.