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Cisco ISR4221/K9 Refurbished Router WhaleyComm
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Cisco ISR4221/K9 Refurbished - Integrated Services Router

MPN: ISR4221/K9
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$995.00
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Every WhaleyComm unit is professionally tested, reset to factory defaults, and certified by our in-house engineers — the same standard trusted by 5,000+ organisations across 25 years. Not a refurb marketplace. A certified lifecycle partner.

Tested to factory specification. Backed by 25 years of enterprise trust.

The Refurbished Cisco ISR4221/K9 is part of Cisco's 4000 Series Integrated Services Router family, purpose-built to meet the demands of modern branch office networking. Combining routing, security, and application performance capabilities into one cohesive platform, this router is an excellent solution for organizations seeking enterprise-class connectivity without the cost of new hardware.

The ISR4221 supports a throughput of up to 35 Mbps (with optional upgrades to 75 Mbps via a software license), making it well-suited for bandwidth-sensitive branch environments. It features 2 WAN/LAN ports and 2 integrated Service Module (SM) slots, allowing for flexible expansion with optional modules such as voice, wireless, and advanced security services.

Running Cisco IOS XE, the ISR4221/K9 benefits from a modern, modular operating system that supports programmability, container-based application hosting, and seamless integration with Cisco's DNA Center for centralized management. Its compact 1RU form factor makes it ideal for space-constrained deployments.

Each Refurbished Cisco ISR4221/K9 sold by WhaleyComm has been professionally inspected and tested to ensure full operational functionality, offering a reliable and cost-effective path to enterprise-grade branch networking.

Technical Specifications
{'Model'
'ISR4221/K9', 'Brand': 'Cisco', 'Series': 'Cisco 4000 Series ISR', 'Condition': 'Refurbished', 'Form Factor': '1RU Rack-Mount', 'WAN/LAN Ports': '2 x RJ-45 GE WAN/LAN', 'Default Throughput': '35 Mbps', 'Maximum Throughput (Licensed)': '75 Mbps', 'Service Module Slots': '2', 'USB Ports': '2 x USB 3.0', 'Operating System': 'Cisco IOS XE', 'Management Port': '1 x RJ-45 Console, 1 x RJ-45 Auxiliary', 'Power Supply': 'Internal AC Power Supply'}
Ideal Use Cases
Small Branch Office Connectivity
The ISR4221/K9 is ideally sized for small branch offices requiring reliable WAN connectivity and integrated security. Its modular expansion slots allow the network to grow alongside business needs without requiring a full hardware replacement.
SD-WAN Edge Deployment
With Cisco IOS XE and compatibility with Cisco SD-WAN (Viptela) software, the ISR4221 can serve as a capable SD-WAN edge device. This enables centralized policy management and improved application performance across distributed enterprise locations.
Secure Remote Site Networking
Organizations that require VPN termination and integrated firewall capabilities at remote sites will find the ISR4221/K9 a cost-effective solution. Its security feature set helps enforce consistent network policies across all branch locations.
What's Included
✔ Cisco ISR4221/K9 Refurbished Router Unit
✔ AC Power Cord
✔ Rack-Mount Hardware (where available)
✔ RJ-45 Console Cable
✔ WhaleyComm Quality Inspection Certification
Lifetime Warranty - No Time Limits. No Questions.
Every WhaleyComm unit ships with a Lifetime Warranty. If it fails under normal operating conditions at any point, we replace it. 25 years, 5,000+ customers.
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Compatibility Details
Review supported optics, cables, software, management protocols, and environment-specific compatibility guidance.
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The Cisco ISR4221/K9 is compatible with the following platforms, software, and ecosystems:

  • Operating System: Cisco IOS XE (multiple releases supported)
  • Management Platforms: Cisco DNA Center, Cisco Prime Infrastructure
  • SD-WAN: Compatible with Cisco SD-WAN (Viptela) software with appropriate licensing
  • Security: Cisco Umbrella, Cisco FirePOWER (with applicable modules)
  • Expansion Modules: Compatible with Cisco SM (Service Module) family and NIM (Network Interface Module) cards
  • Licensing: Cisco Smart Licensing supported; throughput upgradeable via software license to 75 Mbps
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Shipping & Returns
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Shipping
Orders ship within 1-2 business days.
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Returns
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Frequently Asked Questions
Product-specific answers about compatibility, testing, warranty, fulfilment, and purchase confidence.
Refurbished means the unit has been previously used and has since undergone a professional inspection and functional testing process. WhaleyComm ensures each refurbished unit meets full operational standards before sale, offering reliable performance at a reduced cost compared to new hardware.
Yes. The ISR4221/K9 ships with a default throughput of 35 Mbps, which can be upgraded to 75 Mbps through the purchase and activation of a Cisco software performance license. This allows organizations to scale performance as their WAN needs grow.
Yes, the Cisco ISR4221/K9 supports Cisco SD-WAN (Viptela) functionality with the appropriate software licensing applied. It can be managed through Cisco vManage as part of a broader SD-WAN architecture for centralized policy and traffic management.
The ISR4221/K9 includes 2 Service Module (SM) slots that support a range of optional Cisco modules, including those for voice, wireless LAN controllers, and security services. This modularity allows organizations to customize the router's capabilities to fit their specific branch requirements.
Cisco ISR4221/K9 Refurbished - Integrated Services Router
$995.00
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