Expand the modular potential of your branch office and enterprise routers with our selection of Cisco Network Modules, including the industry-standard HWIC (High-Speed WAN Interface Card) and VIC (Voice Interface Card) series.

While modern networking often focuses on fixed-port switches, Cisco’s modular routers (like the ISR 1900, 2900, and 3900 series) rely on these "plug-in" cards to provide the physical flexibility needed for serial connections, legacy telephony, and specialized WAN termination.