Cisco C9300X-NM-8M
Catalyst 9300 8 x mGig Network Module
Product Highlights
As enterprise networks adopt Wi-Fi 6/6E access points, IoT endpoints, and bandwidth-hungry applications, the uplink infrastructure connecting these devices must keep pace. The Cisco C9300X-NM-8M is a multigigabit copper network module that slots directly into Cisco Catalyst 9300X Series switches, instantly adding eight 10GBASE-T RJ-45 ports with mGig technology.
Each port auto-negotiates across 100 Mbps, 1 Gbps, 2.5 Gbps, 5 Gbps, and 10 Gbps, enabling you to connect a mix of legacy and next-generation devices over standard Cat5e, Cat6, or Cat6a cabling — no fiber optics or media converters required. With an aggregate throughput of up to 80 Gbps, the C9300X-NM-8M delivers the headroom modern campus and branch networks demand.
The module is hot-swappable and field-replaceable, so upgrades and maintenance happen without disrupting production traffic. Whether you're building out a high-density wireless deployment, connecting surveillance cameras, or aggregating server traffic, the C9300X-NM-8M provides a cost-effective, future-proof expansion path for your Catalyst 9300X investment.
Features & Benefits
Multigigabit Flexibility
The C9300X-NM-8M supports 100M, 1G, 2.5G, 5G, and 10G speeds on every port via auto-negotiation. This means you can connect a mix of endpoints — from legacy 1G devices to 10G-capable Wi-Fi 6E access points — on the same module without manual speed configuration. It protects your investment as devices are upgraded over time.
Copper-Based 10GBASE-T Connectivity
All eight ports use standard RJ-45 copper connectors compatible with Cat5e, Cat6, and Cat6a cabling. This eliminates the need for SFP+ transceivers and fiber patch cables, reducing per-port costs and simplifying inventory management — especially valuable in brownfield campus deployments where copper runs are already in place.
Hot-Swappable, Field-Replaceable Design
The module is designed for hot-swap installation into the rear network module slot of Catalyst 9300X switches. Network engineers can add capacity or replace a module during production hours without scheduling a maintenance window, minimizing downtime and operational disruption.
High-Density Aggregate Bandwidth
With all eight ports running at 10 Gbps, the C9300X-NM-8M delivers up to 80 Gbps of aggregate bandwidth per module. This capacity supports high-throughput use cases such as wireless controller uplinks, server farm aggregation, and inter-switch trunking within the campus core.
Catalyst 9300X Platform Integration
Purpose-built for the Cisco Catalyst 9300X family, the module integrates directly with the switch's UADP 2.0sec ASIC and Cisco IOS XE software. It benefits from the 9300X platform's enhanced features including hardware-based IPsec, StackWise-1T stacking, and advanced programmability.
Deployment Scenarios
Wi-Fi 6/6E Access Point Backhaul
Next-generation wireless access points require multigigabit uplinks to deliver their full throughput potential. The C9300X-NM-8M provides 2.5G, 5G, or 10G copper connections to each AP, ensuring the wired backhaul never becomes the bottleneck in high-density wireless deployments.
Enterprise Campus Access Aggregation
In campus distribution or aggregation layers, the module connects downstream access switches or high-bandwidth endpoints such as IP surveillance cameras, digital signage, and workstations over existing copper infrastructure — avoiding the cost and complexity of fiber conversion.
Branch Office Network Expansion
Branch offices running a Catalyst 9300X switch can use the C9300X-NM-8M to add eight high-speed uplink ports for servers, NAS appliances, or inter-VLAN routing without deploying additional switches, keeping the branch footprint compact and manageable.
General
Interfaces
Performance
Cabling
Physical
Environmental
Compatibility Notes
Compatible Platforms: Cisco Catalyst 9300X Series modular uplink switches only (e.g., C9300X-12Y, C9300X-24Y, C9300X-24HX, C9300X-48HX, C9300X-48TX). This module is not compatible with non-X Catalyst 9300, Catalyst 9300L/LM, or Catalyst 3850 switches.
Cabling: Supports Cat5e (up to 5G), Cat6 (up to 10G at reduced distances), and Cat6a (10G at full 100m distance).
Software: Managed via Cisco IOS XE on the host Catalyst 9300X switch. Consult the Cisco Software Advisor for minimum IOS XE version requirements for your specific switch model.
Downloads & Resources
Frequently Asked Questions
| Part Number | Product | Key Difference |
|---|---|---|
| C9300X-NM-8Y | Catalyst 9300X 8x 25G/10G/1G SFP28 Module | Fiber-based SFP28 ports supporting up to 25G per port — choose this for fiber uplinks or higher per-port speeds. |
| C9300X-NM-2C | Catalyst 9300X 2x 40G/100G QSFP+ Module | Two QSFP+ ports for 40G or 100G uplinks — ideal for high-bandwidth core/aggregation links rather than access-layer density. |
| C9300-NM-8X | Catalyst 9300 8x 10G/1G SFP+ Module | SFP+-based 10G module for non-X Catalyst 9300 switches — not compatible with C9300X chassis. |
| C9300-NM-4M | Catalyst 9300 4x Multigigabit Module | Four mGig copper ports for non-X Catalyst 9300 switches — half the port density and limited to C9300 (non-X) platforms. |