Cisco NIM Adapter for 4000 Series ISR SM-X Slot

The Cisco SM-X-NIM-ADPTR= is a plug-in adapter designed for Cisco 4300 and 4400 Series Integrated Services Routers. When installed in the SM-X service module slot, it converts that bay into a Network Interface Module slot, giving a single router access to Cisco’s broad catalog of NIM cards.

This simple carrier card lets you add T1 or E1 circuits for voice and data, connect FXO or FXS voice ports, expand switching capacity, provide serial connectivity, or install storage modules, all without purchasing a separate chassis. Because the adapter operates at the line rate of T1 and E1, it preserves the performance you expect from a branch router.

Installation takes only a few minutes: slide the adapter into the SM-X slot, tighten the captive screws, and power up. The router recognizes the new NIM bay automatically, so configuration can begin right away through the familiar IOS interface.

At roughly 2.78 pounds, the adapter adds flexibility without adding significant weight or thermal load. Branch offices, retail sites, and remote facilities can keep existing hardware and still roll out new services or migrate to different access technologies as business needs evolve.

Compatibility covers the Cisco ISR 4321, 4331, 4351, and 4431 models, making this adapter a practical choice for any organization that relies on the 4000 Series platform and needs room to grow.

• Converts an SM-X service module slot into a Network Interface Module slot
• Accepts a wide range of NIMs, including T1/E1, FXO/FXS, switching, serial, and storage
• Maintains T1 and E1 line-rate throughput
• Plug-in design enables quick, tool-less installation
• Compatible with Cisco ISR models 4321, 4331, 4351, and 4431
• Lightweight build of approximately 2.78 pounds