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by Cisco
Product Line: Cisco Integrated Services Router (ISR)
Product Type: Router
Original price $0.00 - Original price $393.00
Original price
$0.00 - $393.00
Current price $393.00
Title: Surplus

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Product Description

The C3945E-AX/K9 Cisco integrates 4 Network RJ-45 ports and supports Gigabit Ethernet, ensuring high-speed connectivity and efficient network performance. It is designed with 13 expansion slots accommodating EHWIC, PVDM, and SFP (Mini-GBIC) modules, enhancing its adaptability for various networking requirements. With a standard memory of 1 GB (upgradable to 2 GB), DRAM memory technology, and 256 MB of flash memory, this device is optimized for reliable storage and processing capabilities within a 3U rack-mount form factor.

Key Feature for the C3945E-AX/K9

  • What is the number of ports available on this device?
    The device has 4 Network RJ-45 ports.
  • Does the part support VoIP functionalities?
    Yes, VoIP is supported.
  • What types of expansion slots are available?
    The device includes EHWIC, PVDM, and SFP (Mini-GBIC) expansion slots, totaling 13.
  • Can the device's memory be upgraded?
    Yes, the standard memory is 1 GB, and it is upgradable to a maximum of 2 GB using DRAM technology.
  • Is there a USB port available?
    Yes, the device is equipped with a USB port.
  • What Ethernet technology does the device support?
    It supports Gigabit Ethernet technology.
  • What is the form factor of this networking device?
    The device is designed for rack mount with a compatible rack unit of 3U.
  • Does the device have a Token Ring port?
    No, there is no Token Ring port.
  • What is the power input range for the device?
    The minimum input voltage is 110 VAC, and the maximum input voltage is 240 VAC.
  • Is Weighted Random Early Detection (WRED) supported?
    Yes, Weighted Random Early Detection is supported.

Product Review

The Cisco C3945E-AX/K9 offers a versatile networking solution with its 4 RJ-45 ports and support for Gigabit Ethernet, making it suitable for high-speed connectivity. However, the limited base memory of 1 GB, expandable to only 2 GB, might hinder performance in highly demanding applications. Additionally, its comprehensive expansion capabilities, including 13 slots for EHWIC, PVDM, and SFP modules, ensure scalability and flexibility in various network configurations.


The Cisco C3945E-AX/K9 is a highly capable router designed to meet the demands of medium to large-sized enterprise networks. This model integrates a comprehensive set of networking features into a single chassis, offering a blend of performance, security, and flexibility. With its emphasis on reliable connectivity and network efficiency, the Cisco C3945E-AX/K9 stands out as a pivotal component in modern networking infrastructure. At the core of its design, the router features four Network RJ-45 ports, providing essential connectivity options for a variety of network configurations. The inclusion of a USB port facilitates easier management and configuration, enhancing the user experience. Despite lacking a Token Ring Port and Serial V.35 Interface, this model compensates with a generous offering of thirteen expansion slots. These slots support a range of expansion modules including EHWIC, PVDM, and SFP (Mini-GBIC), allowing for significant customization and scalability to meet specific network requirements.
  • Gigabit Ethernet technology ensures high-speed data transmission, critical for operations demanding substantial bandwidth.
  • VoIP support underscores the router's capacity to handle voice communications, integrating seamlessly with existing data networks.
  • Features such as Weighted Random Early Detection and Class-Based Weighted Fair Queuing improve network efficiency by optimizing traffic flow and managing congestion.
In terms of memory, the Cisco C3945E-AX/K9 is equipped with 1 GB of standard memory, upgradable to 2 GB, to support advanced network operations and services. The memory technology employed is DRAM, known for its speed and reliability. Additionally, 256 MB of flash memory offers adequate storage for the operating system and applications, contributing to the router's overall performance and stability. The power requirements for this device are versatile, with a minimum input voltage of 110 VAC and a maximum of 240 VAC, making it adaptable to various power supplies and ensuring operational continuity across different geographic locations. Its 3U rack-mount form factor is designed for easy integration into standard rack systems, optimizing space in crowded server rooms. The physical dimensions, with a height of 5.2 inches, a width of 18.7 inches, and a depth of 17.2 inches, underscore its compact yet functional design. In summary, the Cisco C3945E-AX/K9 router offers a comprehensive solution for enterprise networks seeking a balance between performance and expandability. Its support for Gigabit Ethernet, VoIP, and advanced traffic management features, combined with flexible expansion options, makes it a versatile asset for any organization looking to bolster its network infrastructure. Whether for data-heavy applications, voice communications, or securing network borders, this router provides a solid foundation for supporting the diverse needs of today’s enterprise environments.


Part Number & Manufacturer Cisco C3945E-AX/K9
Ports Quantity 4
Port Category Network RJ-45
USB Compatibility Yes
Token Ring Port Availability No
Serial V.35 Interface Availability No
Total Expansion Slots 13
Types of Expansion Slots EHWIC, PVDM, SFP (Mini-GBIC)
Network Technology Gigabit Ethernet
VoIP Capability Yes
Support for Weighted Random Early Detection Yes
Support for Class-Based Weighted Fair Queuing Yes
Base Memory 1 GB
Max Memory Capacity 2 GB
Memory Type DRAM
Internal Storage 256 MB
Lowest Input Voltage 110 VAC
Highest Input Voltage 240 VAC
Rack Compatibility 3U
Mounting Configuration Rack Mount
Height 5.2 in.
Width 18.7 in.
Depth 17.2 in

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