SM-X-NIM-ADPTR - Network interface module adapter - Single-wide or double-wide NIM support - SM-X service module slot - ISR 4000 Series The SM-X-NIM-ADPTR is a network interface module adapter designed for compatible 4000 Series Integrated Services Routers. It allows a supported Network Interface Module (NIM) to be installed in an SM-X service module slot, expanding the routers interface options without requiring a separate chassis. The adapter supports compatible modules for voice, data, switching, serial, and other network connectivity applications. Its modular design helps organizations customize router functionality to meet specific branch and enterprise networking requirements.