The SM-X-NIM-ADPTR acts as a carrier card for the Cisco 4300 and Cisco 4400 series ISRs to carry one single-wide or double-wide network interface module (NIM) to be used in the ISRs SM slot. The SM-X-NIM-ADPTR converts the SM slot on the ISR to a NIM slot and facilitates the use of NIMs such as the T1/E1 (Voice/Data), FXO/FXS, Switching, Serial, Storage Drives, Mobility (3G/4G), or G.HDSL.