Cisco ISR 4351 3GE, 3 NIM, 2 SM, 4 GB Flash | Enterprise Router — CON-L1NBD-C14351K9

Extend branch capacity with the Cisco ISR 4351. Built for enterprise sites that need more room to grow, this router combines 3 Gigabit Ethernet interfaces with 3 NIM slots and 2 SM slots, giving network teams a stronger modular foundation for WAN, voice, and service integration. It is a practical choice when the branch is no longer small, but not yet large enough to justify a higher-tier edge platform. The 4 GB flash and 4 GB DRAM configuration supports the software and operational demands expected in Cisco ISR deployments, while the modular chassis approach helps preserve investment as site requirements evolve. That matters for organizations standardizing on Cisco and looking to avoid repeated hardware refreshes every time the branch adds a new service or circuit. Compared with lower-capacity routers, the ISR 4351 gives you more expansion headroom and a better fit for sites with multiple connectivity needs. It is the kind of platform procurement teams favor when they want a router that can stay in service longer, support more functions, and reduce the cost of future change. For branch environments where uptime, flexibility, and lifecycle value matter, the ISR 4351 is built to hold the line. Ideal For Mid-size branch router for growing enterprise sites Edge connectivity platform for offices with multiple WAN services Modular router for voice, data, and security service expansion Standard Cisco branch deployment where future growth is expected Why This Product 1 More expansion capacity than the ISR 4331 2 Better fit for branches with multiple service requirements 3 Cisco ISR platform supports longer lifecycle planning 4 Stronger modular headroom than fixed-port routers