The Cisco 4-port 10/100BASE-T Fast Ethernet Switch WAN Interface Card (WIC-4ESW) for Cisco 1700 Series modular access routers is an intelligent managed switch, offering small businesses and enterprise small branch office customers the option to integrate LAN switching and routing into one platform. The advanced capabilities of the WAN interface card (WIC), including VLAN support, Spanning Tree Protocol, and traffic prioritization, provide the flexibility for customers to deploy different network configurations.