Cisco ISR4431/K9 Integrated Service Router ISR4431 + 1 x AC Power Supply Tested

Description:

The Cisco ISR4431/K9 Integrated Services Router is used in enterprise networking systems to deliver secure WAN connectivity, advanced routing services, and application-aware networking within Cisco ISR 4000 series infrastructures. Commonly installed in enterprise branch offices, corporate WAN edge environments, data communication gateways, and distributed business networks where high-performance routing and secure connectivity between multiple locations are required. Maintenance teams, network administrators, and system integrators use this router for branch network deployment, infrastructure upgrades, WAN expansion, and replacement of legacy routing platforms in enterprise network architectures.

Applications:

The Cisco ISR4431/K9 router is designed for enterprise branch and edge networking environments that require reliable WAN connectivity, secure data transmission, and scalable network performance. It is frequently deployed in corporate branch offices, financial institutions, retail network infrastructures, government facilities, and distributed enterprise networks where centralized communication between headquarters and remote sites is necessary. The router supports secure VPN connectivity, high-speed data routing, and integrated network services, making it suitable for organizations managing large-scale WAN infrastructures and cloud-connected business systems.

Technical Specifications:

• Manufacturer Part Number (MPN): ISR4431/K9
• Product Type: Integrated Services Router
• Series: Cisco ISR 4000 Series
• Processor Architecture: Multi-core CPU
• Throughput Performance: Up to 1 Gbps aggregate throughput (license dependent)
• WAN Interfaces: Modular WAN interface support
• LAN Interfaces: 3 × Gigabit Ethernet ports
• Expansion Slots: Network Interface Module (NIM) slots and service module support
• Memory: 4 GB DRAM (expandable)
• Flash Storage: 4 GB internal flash
• Power Supply: 1 × AC power supply included
• Form Factor: Rack-mount enterprise router

Common Replacements:

• Cisco ISR4321/K9
• Cisco ISR4451-X/K9
• Cisco ISR4331/K9