Cisco ISR 4431 4GE, 3 NIM, 8 GB Flash, 4 GB DRAM | Enterprise Router — CON-L14HR-ISX451-X

Keep critical branch services online with Cisco ISR 4431, a modular enterprise router designed for distributed infrastructure. Four Gigabit Ethernet ports provide core wired connectivity, while three NIM slots give teams room to add the interfaces and services required for changing WAN and LAN demands. With 8 GB flash and 4 GB DRAM, the platform is built to support the routing, security, and management tasks expected in business edge environments. This model fits organizations that need more than basic connectivity. The ISR 4431 is suited to branch offices, remote sites, and network edge deployments where uptime, service flexibility, and controlled expansion matter. Its modular design helps reduce replacement cycles by allowing the router to adapt as site requirements change. For infrastructure teams standardizing on Cisco routing, the ISR 4431 offers a practical balance of capacity and extensibility. It is a strong fit where the cost of downtime, limited interface density, or constrained upgrade paths would quickly outweigh the value of a lower-tier router. Ideal For Branch office WAN aggregation and local routing Remote site connectivity for distributed enterprise networks Modular edge deployments requiring interface expansion Standardized Cisco routing in mid-sized branch environments Why This Product 1 More expansion capacity than fixed-port branch routers 2 Cisco platform fit for standardized enterprise deployments 3 3 NIM slots support future interface changes 4 4 GB DRAM and 8 GB flash suit branch routing workloads