1.HWIC-1T 2.1 Port Ser WAN I/F Card 3. ... -speed WAN interface cards (HWICs) provide highly flexible connections for Cisco 1800, 2800, and 3800 Series Integrated Services Routers. These HWICs ... WAN aggregation, legacy protocol transport, and high-port-density support. Cisco router module 1 Port Ser High Speed WAN I/F ...