The Layer 3 Cisco 1-Port Fast Ethernet High-Speed WAN interface card (HWIC) supported on the Cisco 1841, Cisco 2800, and Cisco 3800 Series Integrated Services Routers offers small-to-large-sized businesses and enterprise branch-office customers the option to add Layer 3 routed ports with many advanced features, including quality-of-service (QoS) and rate-limiting capabilities.

Device Type	Expansion module
Form Factor	Plug-in module
Interface (Bus) Type	HWIC
Dimensions (WxDxH)	7.8 cm x 12 cm x 1.9 cm
Weight	64 g
Cabling Type	Ethernet 10Base-T, Ethernet 100Base-TX
Data Link Protocol	Ethernet, Fast Ethernet
Data Transfer Rate	100 Mbps
Network / Transport Protocol	TCP/IP, L2TP, PPPoE
Compliant Standards	IEEE 802.2, IEEE 802.3, IEEE 802.3u, IEEE 802.1Q, IEEE 802.3x