Cisco Ether Switch 10/100 high-speed WAN interface cards (HWICs) supported on the Cisco 1800 (modular)/1941, Cisco 2800/2900, & Cisco 3800/3900 series integrated services routers offer small-to-large-size businesses & enterprise branch office customers the option to integrate switching & routing in one device. This combination offers ease of configuration, deployment, & management while using the powerful characteristics of Cisco routing & Cisco Catalyst switching features. The modular Cisco Ether Switch HWICs provide line-rate Layer 2 switching across Ethernet ports using Cisco IOS Catalyst Software. Features such as port autosensing, quality of service (Qo S), VLAN support from 802.1P & 802.1Q standards, & 802.1D spanning tree protocols are standard on the Cisco Ether Switch HWIC. The Cisco Ether Switch HWICs are available in standard 4- or 9-port 10/100BASE-TX switch HWIC & Power-over-Ethernet (Po E) configurations.