The Catalyst 4000 family has a proven track record for wiring closet connectivity. Cisco introduces the Catalyst 4000 system, expanding the breadth and depth of the advanced Catalyst family to further enhance the premier Cisco enterprise wiring-closet offerings. The Catalyst 4000 system provides a cost-effective flexible network solution that scales to meet today's high-performance needs and provides investment protection for the future.The Catalyst 4003 offers a flexible three-slot modular chassis, with one slot reserved for a supervisor engine and two remaining slots for switched port modules; two power supply bays that support redundant (option), load-sharing, fault-tolerant AC power supplies; hot-swappable fan tray bay; familiar Catalyst 5500/5000 look and feel with consistent interfaces and indicators; up to 96 10/100 Fast Ethernet ports, or up to 36 Gigabit Ethernet ports, can be installed intone chassis; modular chassis flexibility and the variety of module speed mixes. The Catalyst 4003 meets the requirements for device redundancy, link resiliency and network availability; it is especially designed for high-speed connections of your company's servers.