... infrastructure that supports resiliency, virtualization, and automation. Cisco Catalyst 4500 Series Switches provide borderless performance, scalability, and services with reduced total ... customers to future proof their network.WS-C4503-ECisco Catalyst E-Series 4503 switch (3-slot chassis), fan, no power supplyWe can ship ... specified. 2011 new in box,cisco original WS-C-4503-E E-Series 4503 switch