<P>The award-winning Cisco Catalyst<SUP>®</SUP> 5500 is the most flexible, feature-rich switch in the industry. With a gigabit architecture that scales throughput to millions of packets per second, the Catalyst 5500 supports up to 528 user ports and is ideal for high-density wiring closets. Advanced multilayer features provide the intelligence needed to support mission-critical applications by delivering end-to-end quality of service (QoS) and multicast support. This product is a DC Power Supply designed for use with the Catalyst 5500 switch. </P>