Cisco 4400 Series 4-Ports 10/100/1000BASE-T Ethernet 2U Rack-mountable Integrated Services Router with 4-Ports SFP – ISR4451-X/K9

Cisco ISR 4451-X Integrated Services Router

Deploy a flexible enterprise branch or network-edge platform with the Cisco ISR 4451-X. Four copper Gigabit Ethernet ports and four SFP interfaces provide adaptable connectivity for local, upstream, and fiber-based network links, while the 2U rack-mountable format supports organized installation in business and infrastructure environments.

Key Features

• Four 10/100/1000BASE-T copper ports
• Four SFP interfaces for compatible network modules
• Integrated services routing platform
• 2U rack-mountable chassis
• Designed for enterprise branch and edge connectivity

Product Specifications

• Brand: Cisco
• Product Family: Cisco 4400 Series
• Model: ISR 4451-X
• Device Type: Integrated Services Router
• Copper Port Count: 4
• Copper Interface: 10/100/1000BASE-T
• Copper Connector: RJ45
• Maximum Listed Copper Speed: 1Gbps
• SFP Port Count: 4
• SFP Media Support: Dependent on Installed Transceiver
• Form Factor: 2U Rack-Mountable
• Network Role: Enterprise Branch and Edge Routing
• Feature Availability: Dependent on Software and Licensing

Use Cases

• Routing traffic at enterprise branch locations
• Combining copper and fiber network services
• Replacing a matching ISR 4451-X platform
• Supporting rack-based edge infrastructure

Compatibility

SFP ports require supported transceivers matched to the intended speed, media, wavelength, connector, and distance. Router features depend on compatible Cisco software, licenses, modules, and service configuration.

Frequently Asked Questions

How many copper ports are listed?

The router provides four 10/100/1000BASE-T ports.

Does it support SFP connectivity?

Yes. Four SFP ports are listed for compatible transceivers.

How much rack space does it use?

The router has a 2U rack-mountable form factor.

The Cisco ISR 4451-X gives enterprise network teams a versatile combination of copper access, fiber-ready interfaces, and integrated routing in one rack platform. A successful deployment requires more than matching the chassis, so buyers should also confirm software, licensing, supported transceivers, modules, service interfaces, and performance requirements.