descending order however it is unnecessary to dispose medium connectors in size always between the largest male connectors and the smallest male connectors in the above mentioned embodiment the male connectors are mounted to the frame but the female connectors may be mounted thereto with the construction of the connector assembly according to the first embodiment of the present invention the large connectors themselves which are fixed to the frame with strong force to protect the small connectors as a result the ribs for protecting the small connectors which are used in the conventional connector assembly is unnecessary to the connector assembly according to the present invention which allows the space occupied by the ribs to be eliminated resulting in small connector in size contributing to the effective utilization of the parts accommodating space further with the construction of the connector assembly according to the second embodiment of the present invention the large connectors are fixed to the frame with considerably strong force which more securely protects the small connecters from impact caused by outer force further in the present invention tile small male connectors are guided and connected to the mated female connectors based on the motion of the large male connectors in the engaging operation which prevents the small male connectors from gouging the mated female connectors it is also possible to insert the large and small male.