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ISR4221-SEC/K9 Secure Router for Small Branch Offices
Product Overview The Cisco ISR4221-SEC/K9 is a security-optimized Integrated Services Router from the Cisco 4000 Series, specifically built for small branch offices requiring secure WAN connectivity, VPN services, and modular expansion. With the SEC (Security) license included, it enables features such as Zone-Based Firewall (ZBFW), IPsec/SSL VPN, and control-plane protection. The ISR4221-SEC/K9 supports up to 35 Mbps throughput by default, expandable to 75 Mbps, making it a cost-effective and secure solution for distributed networks.
Product Details
Specification
Description
Product Code
ISR4221-SEC/K9
Series
Cisco ISR 4000 Series
Form Factor
1RU rack-mountable
Base Performance
35 Mbps (upgradeable to 75 Mbps)
Built-in Interfaces
2 x 1G RJ45 + 1 x 1G SFP
NIM Slots
2 x Network Interface Module slots
DRAM
4 GB DDR3 ECC
Flash Storage
8 GB
USB Ports
1 x USB 2.0
Console Port
1 x RJ45
Power Supply
Fixed internal AC
Software
Cisco IOS XE
Security License Included
Yes – ZBFW, IPsec VPN, SSL VPN, CPPr
SD-WAN Support
Yes (with SD-WAN image)
Product Features
Includes Security (SEC) license for enterprise-grade protection features
Enables Zone-Based Firewall, IPsec, and SSL VPN capabilities
Compact 1RU form factor ideal for space-constrained deployments
Modular architecture with 2 NIM slots for expansion (4G/LTE, voice, etc.)
Supports performance-on-demand licensing to scale as business grows
Powered by Cisco IOS XE with programmability, telemetry, and SD-WAN support
Designed for secure WAN edge connectivity in small branch environments
Similar Models Comparison
Model
Security License
Performance Range
NIM/SM Slots
SD-WAN Ready
Form Factor
ISR4221-SEC/K9
Yes
35–75 Mbps
2 / 0
Yes
1RU
ISR4321-SEC/K9
Yes
50–100 Mbps
2 / 0
Yes
1RU
ISR4331-SEC/K9
Yes
100–300 Mbps
2 / 1
Yes
1RU
Latest ISR Security Models Comparison
Model
Performance
Key Security Features
Target Use Case
ISR4221-SEC/K9
35–75 Mbps
ZBFW, IPsec, SSL VPN
Secure small branch office
ISR4321-SEC/K9
50–100 Mbps
Firewall, VPN, SD-WAN
Growing branch infrastructure
ISR4331-SEC/K9
100–300 Mbps
Enterprise-grade security
Medium branch/edge deployments
Sinanova specializes in supplying ICT networking equipment from leading brands such as Cisco, Huawei, and Juniper. Our product range includes switches, routers, firewalls, wireless access points and controllers, IP phones, video conferencing solutions, and more. We are committed to delivering original and reliable hardware along with professional ICT solutions—all at competitive prices. Our high-quality service ensures a smooth and hassle-free purchasing experience for our clients.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Distributor/Wholesaler,Exporter,Seller
Year Established:
2025
Total Annual:
50000-3000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
Sinanova began as a domestic distributor of Cisco products and an ICT integrator. Over time, the company expanded its portfolio to include Huawei data communication equipment as well as networking solutions from Juniper and Fortinet.
Today, Sinanova specializes in providing a wide range of networ... Sinanova began as a domestic distributor of Cisco products and an ICT integrator. Over time, the company expanded its portfolio to include Huawei data communication equipment as well as networking solutions from Juniper and Fortinet.
Today, Sinanova specializes in providing a wide range of networ...
