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by Cisco
Product Line: Cisco 4000 Series
Product Type: Integrated Services Router
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Original price $0.00 - Original price $0.00
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Title: Surplus

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Product Description

The ISR4431AXK9 Cisco integrates a comprehensive suite of features including an AX License for advanced networking capabilities and an aggregate throughput of 500 Mbps to 1 Gbps, accommodating escalating network demands. It is equipped with 4 RJ-45 ports and 4 SFP ports for versatile connectivity options, alongside 3 NIM slots and an Onboard ISC slot for expandability. With 2 GB DDR3 data plane memory and 4 GB DDR3 control/services plane memory, it ensures efficient data processing and management, supported by a typical power consumption of 65 W and a maximum power with AC power supply of 250 W.

FAQs for the ISR4431AXK9

  • What is the aggregate throughput range of License AX?
    The aggregate throughput range is from 500 Mbps to 1 Gbps.
  • How many total onboard WAN or LAN ports does the device have?
    The device has 4 total onboard WAN or LAN 10/100/1000 ports.
  • Does License AX support Optical Network Modules (NIM Slots)?
    Yes, it includes 3 NIM slots.
  • What type of memory is used for the data plane in License AX?
    License AX uses 2 GB DDR3 memory for the data plane.
  • Are Enhanced Service Module Slots available on License AX?
    No, Enhanced Service Module Slots are not available.
  • What are the external USB options available on License AX?
    It has 2 External USB 2.0 Type A slots and 1 USB Console Port Type B Mini.
  • Does License AX have Onboard ISC Slot?
    Yes, there is 1 Onboard ISC Slot available.
  • What is the AC input voltage range for License AX?
    The AC input voltage range is 100 to 240 VAC.
  • Can License AX be powered by PoE (Power over Ethernet)?
    Yes, it can be powered by PoE Power Supply up to a maximum power of 500 W.
  • What are the physical dimensions of License AX?
    The dimensions are 43.9 mm in height, 438.15 mm in width, and 507.2 mm in depth.

Product Review

The Cisco ISR4431AXK9 offers a scalable throughput range from 500 Mbps to 1 Gbps, accommodating varying bandwidth needs. However, its limitation to 4 RJ-45 and 4 SFP ports may restrict connectivity options for larger network environments. Additionally, the device is equipped with 3 Network Interface Module (NIM) slots and 2 GB of DDR3 data plane memory, supporting advanced network services but potentially falling short in high-demand scenarios without expansion modules.


The Cisco ISR4431AXK9 is a dynamic and scalable integrated services router designed to meet the diverse needs of enterprise networks. Engineered for optimal performance, the device offers a comprehensive suite of features and capabilities to support advanced network infrastructure requirements. At the heart of the Cisco ISR4431AXK9 is its impressive aggregate throughput, which ranges from 500 Mbps to 1 Gbps. This capability ensures efficient handling of heavy data traffic, making it suitable for both medium-sized and large enterprise operations. The router is equipped with a variety of ports and slots to accommodate a wide range of networking needs: it features four 10/100/1000 WAN or LAN ports, providing flexibility in connectivity options. Additionally, the device includes four RJ-45 ports and four SFP ports, enhancing its utility in diverse networking environments. The Cisco ISR4431AXK9 is designed with three Network Interface Module (NIM) slots, expanding its functionality through additional interfaces. Although it does not include enhanced service module slots, it compensates with an onboard ISC slot, further broadening its capability to support various network modules and services. Memory capacity is another critical aspect of the Cisco ISR4431AXK9, with 2 GB DDR3 dedicated to the data plane and 4 GB DDR3 allocated for the control/services plane. This separation ensures efficient processing and smooth operation of network services. The router also supports Online Insertion and Removal (OIR), allowing for seamless upgrades and maintenance without disrupting network operations. For external connectivity and management, the device is equipped with two USB 2.0 Type A slots, a USB console port (Type B Mini), one serial console RJ-45 port, and one serial auxiliary RJ-45 port. These features provide versatile options for network management and troubleshooting. Power efficiency and supply are critical for any networking hardware, and the Cisco ISR4431AXK9 excels in this area. It operates within an AC input voltage range of 100 to 240 VAC and supports an AC input frequency of 47 to 63 Hz. The router has an AC input current range of 3 to 1.3 A, with a surge current capacity of 60 A. Its typical power consumption is 65 W, while the maximum power with an AC power supply is 250 W and reaches up to 500 W with a PoE power supply. Physically, the Cisco ISR4431AXK9 is designed to fit in standard server racks, with dimensions that measure 43.9 mm in height, 438.15 mm in width, and 507.2 mm in depth. This compact size, combined with its comprehensive features, makes it an ideal solution for businesses looking to optimize their network infrastructure.
  • License AX for enhanced network services and capabilities.
  • Supports Online Insertion and Removal (OIR) for easy upgrades and maintenance.
  • Efficient power management with typical and maximum power specifications.
In summary, the Cisco ISR4431AXK9 integrates advanced networking features into a compact and efficient platform, making it suitable for a wide range of enterprise networking needs. Its comprehensive port options, memory capacity, and power efficiency are designed to support the growing demands of modern network infrastructures.


Model NumberISR4431AXK9
License TypeAX
Max Throughput Range500 Mbps - 1 Gbps
Integrated WAN/LAN Speeds10/100/1000 Mbps
Number of Ports4
Ethernet Ports (RJ-45)4
Optical Ports (SFP)4
Network Interface Module (NIM) Slots3
Service Module Slots CompatibilityNo
Internal Service Card (ISC) Slot1
RAM for Data Processing2 GB DDR3
RAM for Control/Service Operations4 GB DDR3
Online Insertion and Removal (OIR)Supported
USB 2.0 Ports2
Mini USB Console Port1
Console Port (RJ-45)1
Auxiliary Console Port (RJ-45)1
Voltage Requirement100 to 240 VAC
Operational Frequency47 to 63 Hz
Current Consumption Range3 to 1.3 A
Surge Current Capacity60 A
Power Consumption (Typical)65 W
Max Power with Standard Supply250 W
Max Power with PoE Supply500 W
Unit Height43.9 mm
Unit Width438.15 mm
Unit Depth507.2 mm

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