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by Cisco
Product Line: Cisco ISR4331AXK9
Product Type: Router
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Original price $0.00 - Original price $0.00
Original price
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Current price $0.00
Title: Surplus

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Product Description

The ISR4331AXK9 Cisco integrates a range of connectivity options, featuring 3 10/100/1000 WAN or LAN ports, 2 RJ-45 and 2 SFP ports, supplemented by 2 NIM slots and 1 Enhanced Service Module slot for versatile networking solutions. It supports an aggregate throughput from 100 Mbps to 300 Mbps, backed by 4 GB (default) to 16 GB (maximum) DDR3 memory and 4 GB to 16 GB flash memory, ensuring efficient data processing and storage. Powering capabilities include both AC and PoE options, with a typical power consumption of 42 W and a maximum of 250 W with AC power supply or 530 W with PoE power supply, housed in a chassis measuring 44.55 mm in height, 438.15 mm in width, and 438.15 mm in depth.

Key Feature for the ISR4331AXK9

  • What is the aggregate throughput range of this networking device?
    The device supports an aggregate throughput ranging from 100 Mbps to 300 Mbps.
  • How many total onboard WAN or LAN ports are available?
    There are 3 total onboard WAN or LAN 10/100/1000 ports.
  • Can you detail the types and quantity of ports available on this device?
    This device includes 2 RJ-45 ports, 2 SFP ports, and supports 2 NIM slots, along with 1 Enhanced Service Module slot and 1 Onboard ISC slot.
  • What is the default and maximum memory capacity?
    The default memory is 4 GB, which can be expanded up to 16 GB DDR3.
  • Does this device support Online Insertion and Removal (OIR)?
    Yes, OIR support is available, ensuring minimal disruption during hardware upgrades or replacements.
  • How many external USB 2.0 Type A slots are provided?
    There is 1 external USB 2.0 Type A slot included.
  • What are the power supply options for this device?
    The device offers both AC and PoE power supply options.
  • What is the AC input voltage range for this device?
    The AC input voltage range is 100 to 240 VAC.
  • What are the dimensions of this networking device?
    The device measures 44.55 mm in height, 438.15 mm in width, and 438.15 mm in depth.
  • What is the maximum power consumption with a PoE power supply?
    With a PoE power supply, the maximum power consumption is 530 W.

Product Review

The Cisco ISR4331AXK9 offers a flexible range of connectivity options with three 10/100/1000 ports, two SFP ports, and comprehensive slot options, catering to diverse networking needs. However, its aggregate throughput, scaling from 100 Mbps to 300 Mbps, might limit performance in high-demand environments, which could be a bottleneck for growing networks. Additionally, the device supports a broad range of power supply options including AC and PoE, and accommodates expansion with memory and flash memory upgradable to 16 GB, ensuring adaptability for future requirements.


The Cisco ISR4331AXK9 is a versatile integrated services router designed to deliver advanced services to small to medium-sized businesses and enterprise branch offices. This device ensures secure and fast data transmission with an aggregate throughput ranging from 100 Mbps to 300 Mbps, adapting to the growing needs of modern network environments. The hardware configuration includes three onboard WAN or LAN 10/100/1000 ports, ensuring high-speed connectivity and efficient traffic management. Additionally, the router features two RJ-45 ports and two SFP ports, enhancing its flexibility to connect to various types of network media. The inclusion of two Network Interface Module (NIM) slots allows for further customization, enabling the addition of voice, video, data, and security services. With one Enhanced Service Module (ESM) slot and an onboard ISC slot, the ISR4331AXK9 supports a wide range of modules, making it a scalable solution for growing network demands. Key hardware specifications: - <>Memory: 4 GB (Default), upgradable to 16 GB DDR3 - <>Flash Memory: 4 GB (Default), expandable to 16 GB - <>Power Supply Options: AC and Power over Ethernet (PoE) The router is equipped with operational resilience features, including Online Insertion and Removal (OIR) support, allowing for module changes without interrupting the system operation. For external connectivity, the device offers one USB 2.0 Type A slot and a mini Type B USB console port, alongside standard serial console and auxiliary RJ-45 ports, facilitating easy management and setup. Power supply flexibility is a key feature of the ISR4331AXK9, with AC input voltage ranging from 100 to 240 VAC and an input frequency of 47 to 63 Hz. The router operates efficiently, consuming a typical power of 42 W, with a maximum power draw of 250 W using the AC power supply and up to 530 W when equipped with a PoE power supply, supporting a wide array of external devices. The compact design, with dimensions of 44.55 mm in height, 438.15 mm in width, and 438.15 mm in depth, allows for easy installation in a variety of settings, from rack mounts to standalone setups. This router is engineered to address the needs of dynamic and demanding network environments, providing a reliable, scalable, and secure networking foundation.


Part NumberISR4331AXK9
Throughput Range100 Mbps to 300 Mbps
Integrated WAN or LAN Ports3 x 10/100/1000
RJ-45 Interfaces2
SFP Interfaces2
NIM Slots Available2
Service Module Slots (Enhanced)1
ISC Slot Onboard1
RAM4 GB (Standard) / 16 GB (Max) DDR3
Storage Memory4 GB (Standard) / 16 GB (Max)
OIR CapabilitySupported
USB 2.0 Type A Ports1
Mini Type B USB Console Interface1
Console Port (Serial RJ-45)1
Auxiliary Port (Serial RJ-45)1
Power Supply VariantsAC, PoE
Voltage Input (AC)100 to 240 VAC
Input Frequency (AC)47 to 63 Hz
Current Input Range (AC)3 to 1.3 A
Surge Current (AC)60 A
Typical Power Consumption42 W
Max Power (AC Supply)250 W
Max Power (PoE Supply)530 W
Unit Height44.55 mm
Unit Width438.15 mm
Unit Depth438.15 mm

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