Cisco ISR 4331 Router | 3 GE, 2 NIM, 1 SM, Enterprise WAN — CON-PSBU-LASR921G

Deliver dependable branch routing with the Cisco ISR 4331, a compact modular platform for organizations that need more flexibility than a fixed-port appliance. Its 3 Gigabit Ethernet ports provide the core wired connections, while 2 NIM slots and 1 SM slot allow teams to extend interface and service capabilities as site requirements change. That makes it a practical choice for branches that need to stay standardized without sacrificing room for growth. With 4 GB flash and 4 GB DRAM, the ISR 4331 provides the storage and memory foundation expected in enterprise edge environments. It is well suited to distributed offices, retail locations, and remote sites where network teams want a consistent Cisco platform that can be managed across many locations. Compared with entry-level routers, this model offers a stronger balance of modularity and footprint, helping reduce the need for frequent hardware changes when connectivity demands evolve. For teams planning around lifecycle, consistency, and controlled expansion, the ISR 4331 delivers a credible enterprise routing base for the branch edge. Ideal For Branch office WAN connectivity Retail network standardization Remote site router deployment Modular edge expansion Why This Product 1 Compact modular design for branch edge deployments 2 2 NIM slots support interface expansion 3 1 SM slot adds service flexibility 4 4 GB flash and 4 GB DRAM support enterprise routing tasks