Cisco High-Speed - Expansion module - HWIC - RS-232 - 8 ports - for Cisco 18XX, 1921 4-pair, 1921 ADSL2+, 19XX, 28XX, 29XX, 3845 V3PN, 38XX, 39XX

Cisco serial and asynchronous high-speed WAN interface cards (HWICs) provide highly flexible connections for Cisco 1800, 2800, and 3800 series integrated services routers. These HWICS help customers enable applications such as WAN aggregation, legacy protocol transport, console server, and dial access server. Customers can mix and match HWICs to tailor cost-effective solutions for common networking problems such as remote network management, external dial modem access, low-density WAN aggregation, legacy protocol transport and high port density support.