A cable connector assembly includes an electrical connector having an insulative housing, a plurality of contacts received in the insulative housing and shelters covering the outer surface of the insulative housing, a cable connecting to the contacts, an outer cover having a rear surface covering the electrical connector and the inner cover has a front surface. The circuit board is associated with a chip, an IDE interface male plug and control circuit. Throughout the pressurizing of the inflatable air cushion, the length of the telescopic guide corresponds to the degree of expansion of the air cushion, thereby providing an internal support for the air cushion unit, which eliminates undesired, irregular movements of the air cushion. The hole extends through the seal plate to receive the pin within it when one seal plate is correctly installed between the machinery components.