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With network complexities increasing, a variety of communication methodologies may be used to monitor critical equipment on the network. At the same time, the availability of reliable power is becoming more important for maintaining data integrity. The net effect of these factors is the need for flexibility of communication methods with strategic equipment including an Uninterruptible Power System (UPS). With the Powerware Expansion Chassis, users may easily configure a UPS-based power protection system that supports the chosen network protocol. The Expansion Chassis is a three-slot peripheral device that expands communication methods for a UPS through its support for X-slot cards. It comes preconfigured with a card that conforms to the Modicon Modbus protocol. The Modbus Card serves as the integral communications controller for the other two slots. The Modbus card and its associated Profiler software utility allow easy integration into a Building Management System (BMS). Key facilities personnel may monitor power conditions in real-time through this configuration.