Skip to content


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

Orders typically ship within 1-3 Business days, if you need an item to ship sooner please contact us.

Product Description

The ISR4431-SEC/K9 Cisco offers an aggregate throughput ranging from 500 Mbps to 1 Gbps, supported by 2 GB DDR3 data plane memory and 4 GB DDR3 control/services plane memory, ensuring efficient data handling and processing capabilities. It features 4 RJ-45 ports and 4 SFP ports, along with 3 NIM slots and a single Onboard ISC slot, providing versatile connectivity and expansion options for various networking requirements. The device is equipped with dual external USB 2.0 Type A slots, a USB console port (Type B Mini), and both serial console and auxiliary RJ-45 ports, enabling comprehensive management and configuration interfaces.

FAQs for the ISR4431-SEC/K9

  • What is the aggregate throughput range of this device?
    The aggregate throughput ranges from 500 Mbps to 1 Gbps.
  • How many NIM slots does the part include?
    It includes 3 NIM slots.
  • Does the device support an Enhanced Service Module?
    No, the device does not support an Enhanced Service Module.
  • What type of memory is used for the data plane in this model?
    The data plane utilizes 2 GB DDR3 memory.
  • Is Onboard ISC slot available on this device?
    Yes, there is 1 Onboard ISC slot available.
  • How many external USB 2.0 Type A slots are provided?
    The device provides 2 external USB 2.0 Type A slots.
  • What are the AC input voltage specifications for this device?
    The AC input voltage specification is 100 to 240 VAC.
  • Can you specify the device's dimensions?
    The device measures 43.9 mm in height, 438.15 mm in width, and 507.2 mm in depth.
  • Does the device come with a security bundle?
    Yes, the device comes with a security bundle.
  • What is the maximum power consumption with a PoE power supply?
    The maximum power consumption with a PoE power supply is 500 W.

Product Review

The Cisco ISR4431-SEC/K9 offers an aggregate throughput of 500 Mbps to 1 Gbps, catering to medium-scale network demands with efficient data handling capabilities. However, its limitation to 4 RJ-45 and 4 SFP ports may restrict expansion options for larger network infrastructures. Additionally, the router supports essential security features and modular design with 3 NIM slots, but lacks enhanced service module slots, potentially limiting advanced service integration.


The Cisco ISR4431-SEC/K9 is a versatile and high-performance router designed for securing branch networks. It falls within the Integrated Services Router family, offering advanced security features alongside powerful hardware specifications. This product is engineered to deliver reliable service for both small and large enterprises, facilitating secure and efficient data communication across various networks. At the core of its performance, the Cisco ISR4431-SEC/K9 boasts an aggregate throughput ranging from 500 Mbps to 1 Gbps, ensuring the smooth handling of large data volumes. This capability makes it suitable for demanding network environments where data integrity and speed are critical. The router is equipped with a comprehensive set of ports and slots to support a wide array of network configurations and expansions. It includes four 10/100/1000 onboard WAN or LAN ports, providing flexibility in connectivity. Additionally, the device features four RJ-45 ports and four SFP ports, enhancing its adaptability to different networking mediums and setups. Expansion capabilities are a significant aspect of the Cisco ISR4431-SEC/K9, highlighted by its three Network Interface Module (NIM) slots. These slots allow for customization and scalability, catering to specific network needs and future growth. The presence of an onboard ISC slot further underscores the router's expandability, offering additional options for network enhancements.
  • Data Plane Memory: 2 GB DDR3
  • Control/Services Plane Memory: 4 GB DDR3
  • OIR Support: Yes
The router's memory configuration, with 2 GB DDR3 for the data plane and 4 GB DDR3 for the control/services plane, ensures efficient data processing and smooth operation of network services. Operational Integrity and redundancy are guaranteed through support for Online Insertion and Removal (OIR), minimizing downtime during hardware upgrades or replacements. Connectivity options are broadened with two external USB 2.0 Type A slots and a USB console port (Type B Mini), facilitating easy management and file transfers. Additionally, the router includes both a serial console RJ-45 port and a serial auxiliary RJ-45 port, offering traditional management and configuration interfaces. Power requirements are well catered to, with the router operating within a wide AC input voltage range (100 to 240 VAC) and frequency (47 to 63 Hz). It supports a typical power consumption of 65 W, with the maximum power reaching 250 W with an AC power supply and 500 W with a PoE power supply, accommodating various operational needs and setups. Physically, the ISR4431-SEC/K9 has a compact form factor, measuring 43.9 mm in height, 438.15 mm in width, and 507.2 mm in depth, making it suitable for rack-mounted installations in space-constrained environments. In summary, the Cisco ISR4431-SEC/K9 integrates powerful hardware specifications with advanced security features, presenting a comprehensive solution for securing and managing enterprise networks. Its flexibility, expandability, and performance capabilities make it an invaluable asset for businesses aiming to bolster their network infrastructure securely and efficiently.


Item Number and ProducerCisco ISR4431-SEC/K9
Includes Security BundleYes
Throughput Range500 Mbps to 1 Gbps
Integrated WAN/LAN Speed10/100/1000
Port Count4
Ethernet Ports4
Optical Network Ports4
Network Interface Module Slots3
Support for Enhanced Service ModuleNo
Built-in ISC Slot1
Forwarding Plane RAM2 GB DDR3
Control and Services Plane RAM4 GB DDR3
Online Insertion and RemovalYes
USB 2.0 Ports2
Mini Type-B USB Console Interface1
Console Port1
Auxiliary Port1
Power Supply Voltage100 to 240 VAC
Operating Frequency47 to 63 Hz
Input Current Specification3 to 1.3 A
Surge Current Capability60 A
Standard Power Consumption65 W
Max Power with AC Supply250 W
Max Power with PoE Supply500 W
Unit Height43.9 mm
Unit Width438.15 mm
Unit Depth507.2 mm

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare