Cisco ISR 4331 SP-AR1-7706B23 3GE 2NIM 1SM | Enterprise Router — SP-AR1-7706B23

Keep critical branch services online with a router designed for secure WAN access, modular expansion, and consistent performance under real enterprise traffic. Cisco ISR 4331 combines 3 Gigabit Ethernet ports with 2 NIM slots and 1 SM slot, giving infrastructure teams the flexibility to add interfaces and services as site requirements change. With 4 GB flash and 4 GB DRAM, this platform is sized for branch routing, security services, and application-aware traffic handling in environments where downtime is not an option. It is a practical fit for organizations standardizing on Cisco ISR architecture and looking for a platform that can support current needs while leaving room for future service modules. For procurement teams, the value is in the balance: a compact branch router with the modularity and memory headroom needed to support business-critical connectivity without overbuying a larger chassis. For architects, it offers a familiar deployment model that integrates cleanly into enterprise WAN designs and remote office rollouts. Ideal For Branch office WAN aggregation and secure internet access Remote site connectivity for distributed enterprise networks Modular edge deployments requiring interface expansion Standardized Cisco router refreshes across branch locations Why This Product 1 More modular than fixed-port branch routers 2 Sized for enterprise WAN edge deployments 3 Includes 2 NIM slots for expansion 4 Includes 4 GB flash and 4 GB DRAM