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Cisco ISR4451-X/K9 4x 1GB RJ-45 4x 1GB SFP 6x Slot (3x NIM 2x SM 1x ISC) Router

Cisco ISR4451-X/K9 4x 1GB RJ-45 4x 1GB SFP 6x Slot (3x NIM 2x SM 1x ISC) Router

$ 432.99
$ 272.99
Only 1 remaining
In stock means that we have the product available to meet your delivery commitment. If it is on the web site, it is available for sale and we can ship it that day.
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Cutoff Ground / 3 day / 2 day - 2pm PT, Cutoff Overnight - 5pm PT. Overnight orders after 4pm PT require approval. Call 800-430-6950 to confirm overnight orders after 4pm PT.
Condition: Seller refurbished
Pre-owned, tested by qualified techs, working, reset-to-factory default, grade A condition, and parts needed for normal functions are included (as described in the listing).
Warranty: 365 days
Warranty coverage period
SKU: NSH-4444
UPC: 882658561153


The Cisco ISR4451-X/K9 Router is a high-performance networking solution designed for businesses with demanding network requirements. With four 1GB RJ-45 ports and four 1GB SFP ports, this router offers versatile connectivity options to accommodate various devices and network configurations.

Equipped with six slots (three NIM, two SM, and one ISC), the ISR4451-X/K9 provides scalability and flexibility for future expansion or customization needs. This router can easily adapt to your evolving business needs, Whether adding additional interfaces or integrating advanced services such as security features or voice modules.

Featuring reliable hardware components from Cisco, you can expect exceptional performance and uptime from this product. Its robust design ensures optimal reliability even in challenging environments.

Cisco ISR4451-X/K9: 4451 with 4x onboard GE, 3x NIM slots, 1x ISC slot, 2x SM slots, 8 GB Flash Memory default, 2 GB DRAM default (data plane), 4 GB DRAM default (control plane).


  • Network Ports : 4x 1 Gigabit Ethernet RJ-45
  • Uplink Ports : 4x 1 Gigabit Ethernet SFP
  • Management Ports : 1x RJ-45 Serial Console, 1x Gigabit RJ-45 Management, 1x Mini-USB Type B Console; 1x AUX, 2x USB 2.0
  • Module Slots and Options : 3x NIM (EHWIC), 2x Service Module (SM), 1x PVDM, 1x Onboard ISC slot - modules are not included
  • DRAM : 4 GB (installed) / 16 GB (max)
  • Flash : 8 GB (installed) / 32 GB (max)
  • Power Supplies : 2x AC Power supply (AC 120/240 V (50/60 Hz). Support for limited PoE Budget available.
  • Aggregate Throughput : 1 Gbps to 2Gbps
  • Fan : 1 x ACS-4450-FANASSY Included
  • Rack Mounts : Included (2-RU)
  • Model Number : ISR4451-X/K9
  • Part Number : ISR4451-X/K9, ISR4451-X/K9=, ISR4451-X/K9-WS
  • Condition : Seller refurbished


  • One (1) Seller Refurbished Cisco ISR4451-X/K9 4x 1GB RJ-45 4x 1GB SFP 6x Slot (3x NIM 2x SM 1x ISC) Router as described above
  • Two (2) Power Cords Included
  • Two (2) AC Power Supplies Included
  • One (1) Set of Rack Mount Brackets Included

Not Included

  • Manuals or product brochures are not included. Software or Firmware DVDs or CDs are not included
    Product information and installation instructions may be found on the manufacturer's website or the web. Software or firmware updates may be available through the manufacturer's website
  • Transceiver Modules Not Included
  • Network Modules Not Included