C9300X-NM-4C=Cisco Catalyst 9300 4 Ports Expansion Module.

Cisco C9300X-NM-4C= Catalyst 9300X Network Module 

The Cisco C9300X-NM-4C= is a high-performance network expansion module engineered for Cisco Catalyst 9300X Series switches. Designed to increase uplink capacity and enhance network scalability, this module delivers four high-speed ports that support both 40 Gigabit and 100 Gigabit Ethernet connectivity. Organizations deploying bandwidth-intensive applications can leverage this expansion module to improve data transmission efficiency, reduce bottlenecks, and accommodate future network growth.

General Information

• Brand: Cisco
• Part Number: C9300X-NM-4C=
• Product Category: Network Expansion Module
• Series Compatibility: Cisco Catalyst 9300X Series
• Port Configuration: 4 x QSFP+/QSFP28 Ports

Technical Specifications

• 4 x QSFP+/QSFP28 network ports
• Supports multiple optical and direct-attach cable options
• High-density uplink architecture
• Optimized for aggregation and core connectivity

Key Features.

• Four high-speed uplink ports
• Support for both 40GbE and 100GbE connectivity
• Compatible with QSFP+ optical modules
• Compatible with QSFP28 transceivers
• Designed specifically for Cisco Catalyst 9300X switches
• Enterprise-grade reliability and performance
• Flexible deployment for data center and campus networks
• Future-ready architecture for evolving bandwidth requirements

Supported QSFP Technologies

• QSFP+ transceivers
• QSFP28 transceivers
• Optical fiber connectivity solutions
• Direct-attach copper cable options
• Short-range and long-range optical deployments

Benefits of Broad Transceiver Support

• Greater deployment flexibility
• Simplified network expansion
• Reduced implementation complexity
• Improved compatibility across network architectures
• Support for various transmission distance

Deployment Benefits

• Simplified installation process
• Reliable interoperability
• Optimized system performance
• Consistent management experience
• Enhanced operational efficiency

Enterprise-Class Reliability

• Stable uplink connectivity
• Consistent network performance
• Support for mission-critical applications
• Long-term operational dependability
• Reduced downtime risks

Network Growth Readiness

• Accommodates growing traffic volumes
• Supports future migration strategies
• Enables phased network upgrades
• Reduces infrastructure replacement costs
• Extends network lifecycle value

Key Performance Attributes

• High-capacity uplink performance
• Support for modern Ethernet standards
• Efficient data forwarding capabilities
• Flexible optical connectivity options
• Enterprise-ready reliability
• Scalable deployment architecture
• Future-proof networking support
• Seamless integration with Catalyst 9300X platforms

Cisco C9300X-NM-4C= Catalyst 9300 4 Ports Expansion Module

The Cisco C9300X-NM-4C= Catalyst 9300 4 Ports Expansion Module is a high-performance network expansion solution designed specifically for Cisco Catalyst 9300X Series switches. This advanced network module provides four QSFP interfaces that support dual-rate 40 Gigabit Ethernet and 100 Gigabit Ethernet connectivity, enabling organizations to expand switching capacity while maintaining exceptional performance, reliability, and scalability. Enterprises deploying modern digital infrastructure require flexible uplink solutions capable of supporting growing bandwidth demands, cloud applications, virtualization, software-defined networking, and high-density traffic environments.

As organizations continue to embrace digital transformation initiatives, network architectures must evolve to support increasing amounts of data traffic. The Cisco C9300X-NM-4C= addresses these requirements by providing flexible high-speed uplink capabilities that seamlessly integrate into Catalyst 9300X deployments. The module enables organizations to increase network throughput, improve backbone connectivity, and create resilient infrastructures that support mission-critical applications and services.

Advanced QSFP-Based Connectivity Architecture

The Cisco C9300X-NM-4C= utilizes Quad Small Form-Factor Pluggable technology to deliver superior networking performance. QSFP interfaces have become the industry standard for high-density data center and enterprise networking because they offer exceptional bandwidth efficiency, scalability, and interoperability. The module includes four dedicated QSFP ports that can operate at either 40G or 100G speeds depending on deployment requirements and installed transceivers.

This dual-rate capability provides exceptional flexibility for organizations that are upgrading network infrastructures gradually. Enterprises can deploy existing 40G network connections while maintaining the ability to migrate to 100G connectivity in the future without replacing the expansion module. Such investment protection reduces overall infrastructure costs while supporting long-term network growth strategies.

Dual-Rate 40G and 100G Performance

One of the most significant advantages of the Cisco C9300X-NM-4C= is its support for both 40 Gigabit Ethernet and 100 Gigabit Ethernet standards. This dual-rate functionality allows network administrators to optimize deployment configurations according to specific bandwidth requirements. Organizations can deploy a combination of 40G and 100G connections across different network segments while maintaining consistent management and operational procedures.

The ability to support multiple speed standards enables seamless integration with existing network infrastructures. Enterprises upgrading from 10G and 40G environments can deploy the module immediately while planning future transitions to higher bandwidth architectures. This flexibility helps reduce migration complexity and minimizes network disruption during infrastructure modernization projects.

Bandwidth Optimization Benefits

High-speed uplink connectivity significantly improves overall network performance by eliminating bottlenecks between access, aggregation, and core network layers. The Cisco C9300X-NM-4C= enables organizations to support bandwidth-intensive applications such as cloud computing, video collaboration, large-scale virtualization, artificial intelligence workloads, and data analytics platforms.

By providing up to four high-speed uplink connections, the module helps ensure efficient traffic distribution across network infrastructures. This enhanced capacity supports increasing user demands while maintaining low latency and consistent application performance throughout the enterprise environment.

Designed for Cisco Catalyst 9300X Series Switches

The Cisco C9300X-NM-4C= has been engineered specifically for compatibility with Cisco Catalyst 9300X Series switches. This purpose-built design ensures seamless integration, optimal performance, and simplified deployment. Network administrators benefit from consistent management interfaces, unified software support, and streamlined operational procedures across the switching environment.

The Catalyst 9300X platform represents Cisco’s next-generation enterprise access switching architecture, providing advanced security, automation, and programmability features. The C9300X-NM-4C= complements these capabilities by extending uplink bandwidth and enabling high-speed connectivity between network layers.

Seamless Integration with Existing Infrastructure

Organizations deploying Cisco enterprise networking solutions require components that integrate smoothly with existing architectures. The Cisco C9300X-NM-4C= provides native compatibility with supported Catalyst 9300X models, reducing deployment complexity and accelerating implementation timelines. Administrators can install and configure the module using familiar Cisco management tools and operational procedures.

This seamless integration minimizes training requirements and operational overhead while ensuring consistent network performance across enterprise environments. The result is a more efficient deployment process and improved return on infrastructure investments.

Enterprise-Class Performance and Reliability

Modern organizations depend on highly reliable network infrastructures to support critical business operations. The Cisco C9300X-NM-4C= is designed to meet enterprise-class reliability standards, delivering consistent performance in demanding production environments. The module supports continuous operation under heavy traffic loads while maintaining predictable network behavior and service availability.

Enterprise networking environments often include applications that require uninterrupted connectivity, such as unified communications, cloud services, financial transactions, healthcare systems, and industrial automation platforms. The robust design of the C9300X-NM-4C= helps ensure these applications receive the bandwidth and reliability required for optimal performance.

Scalability for Growing Network Demands

Enterprise networks continue to experience rapid growth driven by cloud adoption, remote work initiatives, connected devices, and digital transformation projects. The Cisco C9300X-NM-4C= provides the scalability required to accommodate these evolving demands. Organizations can deploy the module as part of a broader network growth strategy that supports increasing traffic volumes without requiring major infrastructure redesigns.

Scalable network architectures enable businesses to respond quickly to changing requirements while controlling operational costs. The high-capacity uplink capabilities provided by the module help ensure that network infrastructures remain capable of supporting future application and bandwidth demands.

Future-Ready Networking Infrastructure

The transition toward higher-speed networking technologies is accelerating across industries. Organizations investing in modern network infrastructures require solutions that support both current and future requirements. The Cisco C9300X-NM-4C= provides a future-ready platform capable of supporting ongoing technology evolution.

With support for 100G networking standards, the module enables organizations to prepare for emerging applications that require significantly higher bandwidth. This future-focused approach helps protect infrastructure investments while reducing the need for frequent hardware replacement cycles. and scalable networking solutions to enable citizen services, interdepartmental collaboration, and digital transformation projects.

Data Center and Campus Network Deployments

Campus networks and data centers frequently require high-capacity uplink connections to accommodate growing traffic volumes and application demands. The Cisco C9300X-NM-4C= provides an ideal solution for connecting access switches to aggregation layers, data center fabrics, and core network infrastructures. The module’s flexible speed support enables organizations to tailor deployments according to specific operational requirements.

Large enterprises benefit from the ability to aggregate multiple high-speed connections, improving traffic distribution and reducing network congestion. These capabilities support scalable architectures capable of accommodating thousands of users and devices across geographically distributed environments.