Skip to content


by Cisco
Product Line: Cisco 2900 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 C2921-AX/K9 Cisco integrates 3 Gigabit Ethernet ports and 6 expansion slots supporting SFP and HWIC modules, tailored for versatile networking needs. It is equipped with a multi-core CPU, 1 GB DDR2 SDRAM (expandable up to 2 GB), and 256 MB of flash memory, ensuring efficient performance and storage capabilities. Designed for rack-mount installation, this model supports redundant power supply, Gigabit Ethernet (10/100/1000Base-T), and provides advanced features such as VoIP support and a dedicated management port, enhancing its utility in complex network environments.

FAQs for the C2921-AX/K9

  • What is the number of ports available?
    There are 3 Ethernet ports available.
  • Does the device with part number 3 support redundant power supplies?
    Yes, it supports redundant power supplies.
  • What types of expansion slots are available?
    The device has 6 expansion slots, supporting SFP and HWIC types.
  • Can part number 3 utilize Gigabit Ethernet technology?
    Yes, it is compatible with Gigabit Ethernet technology.
  • Is there a management port on this device?
    Yes, there is a management port.
  • What form factor is part number 3 designed for?
    It is designed for rack mount installation.
  • Does the device offer VoIP support?
    Yes, it supports VoIP.
  • How much memory is installed in part number 3?
    It comes with 1 GB of DDR2 SDRAM installed.
  • What is the maximum memory capacity?
    The device supports up to 2 GB of memory.
  • What type of memory card is supported by part number 3?
    It supports CompactFlash memory cards.

Product Review

The CISCO C2921-AX/K9 offers a solid foundation for enterprise-level networking, featuring three Gigabit Ethernet ports and six expansion slots, including SFP and HWIC, for versatile connectivity and expansion capabilities. With support for redundant power supplies and a multi-core CPU, it ensures reliable performance and uptime for critical network operations. However, its limitation to 1GB of DDR2 SDRAM, expandable to only 2GB, may pose constraints on memory-intensive applications, despite its robust input voltage range and rack-mount form factor facilitating integration into existing network infrastructures.


The CISCO C2921-AX/K9 is designed to meet the requirements of small to medium-sized businesses and enterprise branch offices, focusing on delivering high-performance networking capabilities. This router integrates multiple services and advanced technologies, providing a versatile and scalable networking solution. At the heart of this device is a multi-core CPU, ensuring efficient processing and handling of complex tasks. The router is equipped with 1 GB of DDR2 SDRAM, which is expandable up to 2 GB, allowing for improved performance and faster data processing. The system's flash memory is set at 256 MB but can support a CompactFlash card for additional storage needs. Key to its design is the support for a wide range of network technologies and interfaces. It features three Gigabit Ethernet ports, facilitating high-speed connectivity and efficient data transfer rates. The device's network technology is based on the 10/100/1000Base-T standard, ensuring compatibility with a broad range of network infrastructures. Expansion capabilities are a significant aspect of the C2921-AX/K9, with six expansion slots available. These slots support SFP (Small Form-factor Pluggable) and HWIC (High-Speed WAN Interface Card) modules, offering flexibility in network configuration and expansion. This adaptability allows the router to accommodate various networking requirements and adapt to changing needs.
  • Redundant Power Supply Support: Ensures continuous operation and reduces downtime by providing a backup power source in case of a failure.
  • VoIP Support: Enables voice over IP communications, allowing for the integration of voice and data services over a single network infrastructure.
  • Management Port: Facilitates easy and secure management of the router, allowing for efficient setup, monitoring, and troubleshooting.
The router's form factor is designed for rack mounting, with dimensions of 3.5 inches in height, 17.3 inches in width, and 18.5 inches in depth. This compact size makes it suitable for installation in standard equipment racks, optimizing space utilization in data centers and networking closets. In terms of power, the device can operate on both 110 VAC and 220 VAC, providing versatility in power supply options. The router's design also includes a license type AX, indicating advanced software features and functionalities that are available out of the box. Despite lacking a PoE (Power over Ethernet) RJ-45 port and a Token Ring port, the C2921-AX/K9 compensates with a robust set of features including USB support for additional connectivity options. This allows for direct connection of peripheral devices and easy transfer of files and configurations. In summary, the CISCO C2921-AX/K9 is a powerful and flexible networking solution, designed to support the advanced needs of modern businesses. With its comprehensive set of features, including redundant power supply support, VoIP capabilities, and versatile expansion options, this router represents a scalable solution for efficient and reliable network infrastructure deployment.


Part Number C2921-AX/K9
Manufacturer CISCO
Ports Quantity 3
Expansion Slots Total 6
Types of Expansion Slots SFP, HWIC
Network Interface Gigabit Ethernet
Support for Redundant Power Supply Yes
Processor Architecture Multi-Core
Mounting Configuration Rack Mount
Networking Standards 10/100/1000Base-T
Administration Port Availability Yes
Capability for VoIP Yes
Power over Ethernet (PoE) Support No
Unit Height 3.5 in.
Unit Width 17.3 in.
Unit Depth 18.5 in.
Software License AX
Base Memory 1 GB
Memory Type DDR2 SDRAM
Token Ring Interface No
USB Interface Yes
High-Speed Internet Ports Count 3
Internal Storage 256 MB
Supported Memory Card CompactFlash
Maximum Expandable Memory 2 GB
Power Input 110 VAC / 220 VAC

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