Description 

The Cisco ISR4451-X/K9 is a modular, high-performance integrated services router built to deliver next-generation WAN services, advanced security, and application optimization for mid-to-large enterprise branch deployments. 

 

 

Technical Specifications 

Condition	New/Never Used Surplus
Brand	Cisco
Category	Networking
Part Number	ISR4451-X/K9
Subcatecory	Switches – PoE / Cloud Managed
Series	ISR 4400 Series
Aggregate Throughput	1–2 Gbps
LAN/WAN Ports	4 x 10/100/1000 RJ-45
SFP Ports	4 x 1G SFP
SM-X Slots	2
NIM Slots	3
Data Plane DDRM	2 GB
Control Plane DDRM	4 GB (max 16 GB)
Flash Memory	8 GB (max 32 GB)
AC Input Voltage	100–240 VAC (autoranging)
Input Frequency	47–63 Hz
Dimensions (W x D x H)	88.9 x 438.15 x 469.9 mm

  

 

Information About ISR4451-X/K9

The ISR4451-X/K9 provides 4 x 10/100/1000 RJ-45 ports and 4 x 1G SFP ports, delivering versatile WAN and LAN connectivity. It includes 2 enhanced service-module (SM-X) slots, 3 network interface module (NIM) slots, and 1 integrated services card (ISC) slot, allowing you to customize the router with voice, WAN optimization, or additional interface cards.

Equipped with 2 GB DDRM for the data plane and 4 GB for the control/services plane (expandable to 16 GB), this router ensures strong performance under demanding traffic conditions. Flash memory starts at 8 GB and supports up to 32 GB, providing ample storage for IOS images and configurations.

Key Features:

• 1 to 2 Gbps Aggregate Throughput: Supports scalable performance for growing branch networks

• Dual Connectivity: 4 x RJ-45 + 4 x SFP ports for flexible WAN/LAN configuration

• Highly Modular Architecture: Offers 2 SM-X, 3 NIM, and 1 ISC slot for service flexibility

• Expandable Memory and Flash: Supports high-performance and high-availability routing services

• Power Options with AC & PoE: Built-in support for varied power requirements in enterprise environments

The ISR4451-X/K9 is purpose-built for scalable, secure, and intelligent edge routing in enterprise networks.