Save up to 80% over list price on the Cisco ISR4331-SEC/K9 — a fully tested, refurbished Cisco 4331 Integrated Services Router with the Advanced Security license bundle pre-installed. Backed by Reef Telecom's industry-leading 10-year warranty, this enterprise-grade branch router delivers secure WAN connectivity right out of the box.

Key Specifications

• Model: Cisco ISR 4331 (ISR4331-SEC/K9)
• Aggregate Throughput: 100 Mbps – 300 Mbps
• Onboard Ports: 3x Gigabit Ethernet (2x RJ-45, 1x combo GE RJ-45/SFP)
• SFP Ports: 2x SFP for fiber uplinks
• Expansion: 2x NIM slots, 1x SM-X slot, 1x ISC slot
• Memory: 4 GB Flash / 4 GB DRAM (expandable to 16 GB each)
• Security License: Zone-Based Firewall, IPSec VPN, DMVPN, FlexVPN, EZVPN
• Form Factor: 1RU rack-mountable
• Power: AC 100–240V auto-ranging (PWR-4330-AC)

Security Bundle Features

The SEC/K9 license enables advanced enterprise security services including Zone-Based Firewall for granular traffic inspection, IPSec and DMVPN for secure site-to-site connectivity, and FlexVPN for next-generation IKEv2-based tunnels. Ideal for branch offices requiring encrypted WAN transport over MPLS or broadband Internet links.

Ideal Use Cases

• Enterprise branch office WAN routing and security
• Secure VPN hub or spoke for multi-site deployments
• SD-WAN migration with Cisco IWAN capabilities
• MPLS and Internet dual-WAN edge routing with QoS

Free shipping on orders over $300. Every refurbished unit is professionally cleaned, fully tested, and restored to factory defaults before shipping.

Condition

Certified Refurbished

Warranty

10-Year Reef Telecom Warranty

Manufacturer Part Number

ISR4331-SEC/K9

Reef SKU

ISR4331-SEC/K9-R

UPC

882658710544

Brand

Cisco

Free ground shipping on orders over $300 (contiguous US). Same-day dispatch on orders placed before 4 PM EST.

All products include our industry-leading 10 Year Warranty backed by Reef Telecom.