Cisco ISR4221/K9 Integrated Services Router
Save up to 80% over list price on this Cisco 4221 ISR — a high-performance branch router built for enterprise WAN, SD-WAN, and secure connectivity. Every refurbished unit from Reef Telecom is thoroughly tested, cleaned, and backed by our industry-leading 10-year warranty.
Key Specifications
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Part Number: ISR4221/K9
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Throughput: 35 Mbps–75 Mbps (with performance license upgrade)
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WAN/LAN Ports: 2x Gigabit Ethernet (RJ-45) + 1x GE SFP combo port
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Module Slots: 2x NIM slots, 1x ISC slot
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Memory: 4 GB DRAM default / 8 GB Flash default
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CPU: Multi-core processor
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Form Factor: 1RU rack-mountable
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Software: Cisco IOS XE with SD-WAN, VPN, firewall, and application-aware routing support
Why Buy From Reef Telecom?
- 10-year warranty on all refurbished equipment
- Free shipping on orders over $300
- Fully tested and certified before shipment
- Same-day shipping on most orders
Ideal Use Cases
The Cisco 4221 ISR is designed for small-to-mid enterprise branch offices, remote sites, and SD-WAN deployments. It supports Cisco Intelligent WAN (IWAN) features including application-aware routing, VPN encryption, WAN optimization, and traffic management — all without compromising throughput. Expand functionality with optional NIM modules for T1/E1 WAN, additional GE switching, or wireless LAN.
