The Cisco C9300-NM-4G is a high-performance 4-port Gigabit Ethernet network module designed for Catalyst 9300 Series switches. This flexible expansion module provides additional copper and fiber connectivity options, enabling network administrators to customize port density and media types to meet diverse deployment requirements in enterprise access, distribution, and small core environments.
Port Configuration:
4 x 10/100/1000BASE-T RJ-45 ports (auto-negotiating)
SFP-based uplink flexibility (when used with SFP modules)
Non-blocking architecture with full wire-speed forwarding
Performance Characteristics:
4 Gbps aggregate throughput
<3µs latency per port
Support for jumbo frames (up to 9216 bytes)
Power & Environmental:
8W typical power consumption
Operates in 0°C to 40°C environments
Front-accessible status LEDs
Full Cisco IOS XE compatibility:
Unified access with DNA Center
Support for advanced features (QoS, ACLs, NetFlow)
MACsec 256-bit encryption capability
Deployment Flexibility:
Hot-swappable without switch reboot
Auto-detection and configuration
Stacking support across Catalyst 9300 switches
✔ Branch office connectivity expansion
✔ Security appliance connectivity
✔ Server/storage access ports
✔ Wireless controller uplinks
✔ Legacy device connectivity
Feature | C9300-NM-4G | C9300-NM-4GX | Improvement |
---|---|---|---|
Port Speed | 1G | 2.5G/5G Multi-Gig | 5x speed potential |
Power Efficiency | 8W | 6W | 25% reduction |
PoE Capability | None | PoE+ (30W per port) | New power options |
Management | Basic telemetry | AI Endpoint Analytics | Enhanced visibility |
Security | MACsec | Post-Quantum Crypto | Future-proofing |
Multi-Gigabit Ready – Supports modern Wi-Fi 6/6E access points
Smart Power Management – Dynamic PoE allocation
Intent-Based Networking – Automated policy enforcement
Enhanced Diagnostics – Cable quality monitoring
Sustainable Design – 25% smaller carbon footprint
Backward Compatibility: Works in existing Catalyst 9300 chassis
Deployment Scenarios:
Wi-Fi 6/6E infrastructure upgrades
IoT device connectivity
High-density office spaces
Financial Planning:
15% cost premium with 3-year ROI through operational efficiencies
The C9300-NM-4G provides reliable Gigabit expansion for Catalyst 9300 switches, while the C9300-NM-4GX delivers:
Multi-Gigabit connectivity (up to 5Gbps)
Advanced PoE+ capabilities
AI-driven network analytics
Sustainable power efficiency
Future-ready security
Alternative Title Concepts
"From Gigabit to Multi-Gig: The Evolution of Access Switching"
"The Smarter Network Edge: Intelligent Port Expansion"
"Beyond Connectivity: Powering the Modern Workspace"
"The Sustainable Switch: Eco-Conscious Networking"