Cisco ISR4331-R-AX/K9 Router – High-Performance Enterprise Edge

Usage Area

The Cisco ISR4331R-AX/K9 router is deployed in enterprise and mid-sized branch office environments as a modular edge platform for WAN aggregation, secure connectivity, and integrated routing. It supports IP base functionality, enabling reliable data transport between remote sites and central data centers. The platform is suited for organizations requiring scalable throughput for concurrent VPN, firewall, and application services. Its modular NIM slots allow integration of additional network interface modules for evolving connectivity needs.

Construction Features

• Modular chassis with two Network Interface Module (NIM) slots for flexible WAN/LAN expansion.
• Integrated dual Gigabit Ethernet (GE) ports for base connectivity.
• 8 GB of onboard flash memory for storage of firmware and configuration files.
• 8 GB DRAM for sustained routing and service performance.
• Fixed hardware design with no moving parts, supporting fanless operation in controlled environments.
• Front-panel LED indicators for rapid status monitoring of power, activity, and interface states.

Technical Parameters

• Model: ISR4331R-AX/K9
• Brand: Cisco
• Category: Network equipment, modems
• Ethernet ports: 2 x GE (copper RJ45)
• Flash memory: 8 GB
• DRAM: 8 GB
• NIM slots: 2
• Included license: IP Base (IPB)

Standards & Certification

The router conforms to Cisco’s hardware design and interoperability standards for enterprise routing platforms. It operates under the IP Base software feature set, ensuring compliance with industry-standard routing protocols and security practices. The device is certified for deployment in typical commercial and industrial temperature environments as specified by Cisco.