Cisco NIM-2GE-CU-SFP Network Interface Module

The Cisco NIM-2GE-CU-SFP Network Interface Module is a 2-port Gigabit Ethernet dual-mode module designed for Cisco ISR 4000 Series routers to provide flexible copper and fiber connectivity, enabling rapid media changes without replacing the router. Each of the two auto-negotiating ports supports 10/100/1000 Mbps and can operate as RJ-45 copper or via an SFP fiber interface, allowing mixed-media deployments and easy upgrades from copper-only or fiber-only configurations in enterprise, branch, and industrial networks. Installations are plug-in, designed for the NIM slot, with support for full and half duplex operation to match differing topology and traffic scenarios as media types evolve. Common replacements listed include Cisco NIM-1GE-CU-SFP, Cisco NIM-2GE-SFP, and Cisco NIM-ES2-4, reflecting its role in modular expansion and replacement within Cisco ISR 4000 environments.