HWIC-4ESW stands for 4-port 10/100 High-Speed WAN Interface Card, a router manufactured by Cisco Systems for wide-area networks. The Cisco router belongs to a series that offers small-to-large-size businesses and enterprise-branch office customers the option to integrate switching and routing in one device. Simplicity and efficiency are among the strengths of the high-speed WAN interface cards, which are easy to set up, deploy, and manage, while using the powerful characteristics of Cisco routing and Cisco Catalyst switching features. The HWIC-4ESW has four 10/100 switched Ethernet ports, with options for inline power support on all four ports. Features such as port auto-sensing, quality of service (QoS), VLAN support from 802.1P and 802.1Q standards, and 802.1D spanning-tree protocols are standard on the Cisco router. These high-speed WAN interface cards come with Power-over-Ethernet (PoE) configuration, which consist of a 4-port 10/100BASE-TX switch and a 4-port inline power module daughter card. The power module daughter card houses a power controller for detecting, classifying, and enabling power on 802.3af-compliant powered devices attached to the HWIC-4ESW.