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 ISR4331-AX/K9 Cisco integrates a range of networking capabilities with an aggregate throughput of 100 Mbps to 300 Mbps, supported by 3 total onboard WAN or LAN 10/100/1000 ports, including 2 RJ-45 ports and 2 SFP ports. It is designed for scalability and performance, featuring 2 NIM slots, 1 enhanced service module slot, 1 onboard ISC slot, and expandable memory from 4 GB to 16 GB DDR3, along with 4 GB to 16 GB flash memory. Power efficiency is optimized with options for AC and PoE supplies, maintaining a typical power consumption of 42 W and a maximum power of 250 W with AC supply or 530 W with PoE supply, all within a compact form factor of 44.55 mm in height, 438.15 mm in width, and 438.15 mm in depth.

FAQs for the ISR4331-AX/K9

  • What is the aggregate throughput range of this device?
    The aggregate throughput range is from 100 Mbps to 300 Mbps.
  • How many total onboard WAN or LAN ports does the device feature?
    It features 3 10/100/1000 ports.
  • Can you detail the types and numbers of ports available?
    Yes, the device includes 2 RJ-45 ports, 2 SFP ports, 2 NIM slots, 1 Enhanced Service Module slot, and 1 Onboard ISC slot.
  • What are the memory specifications?
    The device comes with 4 GB of DDR3 memory by default, which can be expanded up to 16 GB.
  • Does this device support Online Insertion and Removal (OIR)?
    Yes, OIR support is available.
  • What are the power supply options?
    The device offers both AC and PoE power supply options.
  • What is the maximum power consumption with an AC power supply?
    The maximum power consumption with an AC power supply is 250 W.
  • What are the physical dimensions of this device?
    The device measures 44.55 mm in height, 438.15 mm in width, and 438.15 mm in depth.
  • Are there any USB ports available?
    Yes, there is 1 external USB 2.0 Type A slot and 1 USB console port Type B Mini.
  • What is the typical power consumption?
    The typical power consumption is 42 W.

Product Review

The CISCO ISR4331-AX/K9 provides a flexible range of connectivity options with three 10/100/1000 ports, two SFP ports, and additional slots for NIM, enhanced service modules, and ISC, catering to diverse network configurations. However, its aggregate throughput, ranging from 100 Mbps to 300 Mbps, may limit performance in high-demand environments, potentially necessitating upgrades or additional units for growing networks. The unit supports a scalable memory option from 4 GB to 16 GB DDR3, accommodating future network expansions and complexity, yet the initial power capacity and throughput may not suffice for all enterprise-level applications without considering the power supply and performance enhancements.


The CISCO ISR4331-AX/K9 is a modular router designed for small to medium-sized businesses and branch offices, offering scalable, secure, and easy-to-manage connectivity. This product stands out for its flexibility and performance capabilities, designed to meet the evolving needs of today's dynamic networking environments. At its core, the ISR4331-AX/K9 supports an aggregate throughput ranging from 100 Mbps to 300 Mbps, ensuring efficient data processing and transfer rates that can be adjusted based on network demands. This adaptability makes it an ideal solution for organizations looking to optimize their network performance without the need for extensive hardware upgrades. Key hardware specifications include: - Total onboard WAN or LAN 10/100/1000 ports: 3 - RJ-45 ports: 2 - SFP ports: 2 The device also offers a comprehensive set of interfaces and slots for expanded functionality:
  • NIM (Network Interface Modules) slots: 2, allowing for a variety of network interfaces to be added.
  • Enhanced Service Module slots: 1, providing options for additional features and services.
  • Onboard ISC slot: 1, for integrated service cards.
Memory capacity on the ISR4331-AX/K9 is robust, with default settings at 4 GB for both DRAM and flash memory, and the capability to expand up to 16 GB. This flexibility in memory allocation allows for enhanced processing power and storage, facilitating complex operations and the running of multiple services simultaneously. For maintenance and expansions, the router supports Online Insertion and Removal (OIR), minimizing downtime during upgrades or module replacements. External connections are facilitated through one USB 2.0 Type A slot and a mini Type B USB console port, in addition to one serial console RJ-45 port and one serial auxiliary RJ-45 port, offering a variety of options for direct device management. Power supply options are versatile, with support for both AC and Power over Ethernet (PoE). The AC input handles a voltage range from 100 to 240 VAC and an input frequency from 47 to 63 Hz. Depending on the power supply option selected, the device can consume a typical power of 42 W, with a maximum power draw of 250 W for AC power supply configurations, and up to 530 W when utilizing a PoE power supply. Physically, the ISR4331-AX/K9 presents a compact form factor with dimensions of 44.55 mm in height, 438.15 mm in width, and 438.15 mm in depth, making it suitable for rack mounting in a standard equipment rack. In summary, the CISCO ISR4331-AX/K9 integrates powerful performance capabilities, extensive memory and storage options, and a comprehensive set of interfaces and slots into a compact, manageable solution. Its adaptability and scalability make it an excellent choice for businesses looking to efficiently manage their networking requirements while preparing for future growth and technological advancements.


Part Number and ManufacturerCISCO ISR4331-AX/K9
Data Throughput Range100 Mbps to 300 Mbps
Integrated LAN/WAN Ports3 x 10/100/1000
Ethernet Ports (RJ-45)2
Optical Network Ports (SFP)2
Network Interface Module (NIM) Slots2
Service Module Slots for Enhancements1
Internal Service Card (ISC) Slot1
System Memory Configuration4 GB (Standard) / 16 GB (Max) DDR3
Storage Memory4 GB (Standard) / 16 GB (Max)
Support for Online Insertion and Removal (OIR)Yes
USB 2.0 Ports (Type A)1
Mini Type B USB Console Interface1
Console Interface (RJ-45)1
Auxiliary Interface (RJ-45)1
Power Supply OptionsStandard AC and Power Over Ethernet (PoE)
AC Voltage Requirement100 to 240 VAC
Frequency Requirement for AC47 to 63 Hz
Current Consumption Range AC3 to 1.3 A
Surge Current Capacity AC60 A
Power Usage (Typical)42 W
Max Power Consumption (AC Supply)250 W
Max Power Consumption (PoE Supply)530 W
Device Height44.55 mm
Device Width438.15 mm
Device Depth438.15 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