The GE Fanuc IC693CBL302 is a specialized I/O bus expansion cable designed specifically for Series 90-30 systems. Often referred to as a wye cable, this model features a single male 25-pin D connector at each end, with one of the connectors being a terminated male suitable for connection to the expansion baseplate. The IC693CBL302 facilitates the extension of the I/O Bus to remote or additional expansion baseplates, making it essential for applications requiring additional I/O slots or when baseplates are positioned further from the CPU baseplate. This 50-foot cable includes built-in I/O bus terminating resistors within the connector, eliminating the need for a separate termination block in the system. With just one expansion baseplate, users can effectively terminate the I/O bus using this cable. The system can utilize a maximum of seven wye cables simultaneously, with the total cable length between the CPU baseplate and the last expansion baseplate not exceeding 50 feet (15 meters). It is important to ensure that all connections and disconnections are performed only after the I/O expansion baseplate has been powered down to avoid operational hazards.