Cisco ISR 4331 3GE, 2NIM, 1SM, 4 GB Flash | Enterprise Router — CON-L2NBD-C14431K9

Build a branch edge that stays predictable as requirements change. The Cisco ISR 4331 pairs 3 Gigabit Ethernet ports with 2 network interface module slots and 1 service module slot, giving IT teams the flexibility to tailor connectivity and add services without moving to a larger platform than the site requires. With 4 GB flash and 4 GB DRAM, this router provides the memory resources needed for routing operations and configuration storage in enterprise branch environments. It is a practical fit for organizations that want a controlled, modular edge platform rather than a fixed-function router that can become limiting as the site grows. The ISR 4331 is especially compelling where branch standardization matters. It gives procurement and infrastructure teams a platform that balances capability and footprint, making it easier to align hardware choices with site size, service needs, and lifecycle planning. Compared with lower-tier routers, it offers more expansion flexibility and a stronger foundation for business-critical connectivity. Ideal For WAN edge router for small to mid-size branch offices Modular routing platform for distributed enterprise sites Standard branch hardware for multi-location rollouts Connectivity hub for sites that need controlled expansion Why This Product 1 Smaller expansion footprint than the ISR 4351 2 2 NIM slots support modular branch services 3 1 SM slot fits targeted service needs 4 4 GB flash and 4 GB DRAM support stable routing operations