Cisco C9300-NM-2X100G Full Official Product Description
Note
The official Cisco part number isC9300X-NM-2C, whileC9300-NM-2X100Gis the widely used descriptive commercial designation for procurement, inventory and engineering documentation. This document uniformly adopts the requested designation C9300-NM-2X100G for full consistency.
1. Part Number & Naming Definition
Official Full Name
Cisco C9300-NM-2X100G Catalyst 9300X Series Hot-Swappable 2-Port 40G/100G QSFP28 High-Density Uplink Network Module
Naming Breakdown
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C9300: Platform identifier for Cisco Catalyst 9300 stackable enterprise aggregation and access switches
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NM: Network Module, rear-panel pluggable uplink expansion card
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2X100G: Two independent QSFP28 slots supporting native 40 Gigabit Ethernet and 100 Gigabit Ethernet transceivers, plus 4×25G breakout capability
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Suffix=(C9300-NM-2X100G=): Field-replaceable spare unit for hardware replacement
Core Positioning
The C9300-NM-2X100G is a high-performance 100G-capable uplink expansion module exclusively designed for Cisco Catalyst 9300X series high-speed fiber switchesCisco Mera.... It delivers an aggregate 200Gbps full-duplex uplink bandwidth for large enterprise campus core layers, medium-to-large data center leaf-spine fabric interconnections, high-bandwidth StackWise-1T stacking fabric links, and long-distance inter-facility fiber backbone trunks. The hot-swappable design allows on-site capacity expansion or hardware maintenance without full switch power outage. It supports all Cisco-certified QSFP28 100G/40G optical transceivers and passive/active QSFP28 DAC copper twinax cables, plus breakout cables to split each 100G port into four independent 25G SFP28 lanes for flexible mixed-speed hybrid network deployments.
2. Hardware & Software Compatibility
Supported Switch Platforms
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Fully compatible with all Catalyst 9300X series chassis: C9300X-24Y, C9300X-48TX, C9300X-48HX, C9300LM fiber models
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Not compatible with standard non-X Catalyst 9300, Catalyst 9200 / 9500 series switches
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Each Catalyst 9300X switch supports one rear network module slot for a single uplink expansion card
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Backward compatible with Catalyst 9300X stacking architecture and StackWise-1T high-bandwidth stacking standardCisco
Supported Cisco IOS XE Firmware
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Minimum supported release: Cisco IOS XE Amsterdam 17.3.x
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Fully validated for all modern IOS XE branches: 17.6.x, 17.9.x, 17.12.x, 17.13.x and newer stable releasesCisco
Transceiver & Cable Compatibility
All Cisco-certified QSFP28 100G/40G transceivers and cables are supported:
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100G optical modules: QSFP-100G-SR4, LR4, ER4, BiDi BD transceivers
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40G optical modules: QSFP-40G-SR4, LR4, ER4, BiDi BD transceivers
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QSFP28 passive / active DAC twinax copper cables (1m, 3m, 5m)
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100G-to-4×25G breakout cables for splitting one 100G port into four independent 25G TwentyFiveGigabitEthernet interfaces
3. Physical & Electrical Specifications
Form Factor
Single-width rear pluggable hot-swappable expansion module dedicated for Catalyst 9300X rear uplink slot
Power Consumption
Typical power draw: 22 Watts maximum under full dual-port 100G load
Environmental Operating Parameters
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Operating temperature: 0°C to 40°C (32°F to 104°F)
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Non-operating storage / transit temperature: -40°C to 70°C (-40°F to 158°F)
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Relative humidity: 10% to 90% non-condensing
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Maximum operating altitude: 3000 meters (10,000 ft) above sea level
Port Performance Metrics
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Each QSFP28 port supports auto-sensing native 40Gbps / 100Gbps full-duplex line rate
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Aggregate total module bandwidth: 200Gbps full-duplex
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Breakout mode: Each 100G port splits into four independent 25G full-duplex interfaces
4. Key Functional Feature Set
Hot-Swap Operation
The module can be inserted or removed while the host Catalyst 9300X switch remains powered on, eliminating service interruption during hardware replacement or uplink capacity expansion.
StackWise-1T High-Speed Stacking Support
Enables deployment of ultra-high-bandwidth stacking interconnections between Catalyst 9300X stack members, supporting up to 1Tbps total stack fabric bandwidth for stacks of up to eight switchesCisco.
Full Layer 2 & Layer 3 IOS XE Feature Compatibility
All ports inherit the complete enterprise feature suite of the host switch: static/dynamic routing (OSPF, EIGRP, BGP), 802.1Q VLAN trunking, granular QoS traffic prioritization, access control list security filtering, LACP link aggregation, and broadcast storm control.
Digital Optical Monitoring (DOM) & Streaming Telemetry
Built-in DOM diagnostic support for all QSFP28 optical transceivers to monitor real-time optical transmit/receive power, module temperature, supply voltage and laser bias current. Integrated IOS XE streaming telemetry enables remote real-time port performance monitoring and hardware fault alerting for centralized network management.
Enterprise High Availability Features
Fully compatible with SSO (Stateful Switchover) and ISSU (In-Service Software Upgrade) for zero-downtime switch firmware updates. Dual QSFP28 ports support redundant uplink design for automatic link failover protection against fiber or transceiver faults.
Advanced Enterprise Security Integration
Supports Cisco DNA Center automation and zero-touch provisioning, Encrypted Traffic Analytics (ETA), 802.1X port-based authentication, MACsec 25G/40G/100G link-layer encryption, and TrustSec SGT security group tagging for end-to-end SD-Access network segmentation.
5. Typical Enterprise Deployment Use Cases
Campus Aggregation Core Uplinks
Deployed on Catalyst 9300X fiber aggregation switches to provide high-capacity 100G uplinks connecting large access switch stacks to campus core switches or core routers.
StackWise-1T Stack Fabric Interconnects
Utilize the 100G QSFP28 ports to build ultra-high-bandwidth stacking trunks between stacked Catalyst 9300X units, delivering ultra-low-latency cross-stack traffic forwarding for large multi-switch stacks.
Medium & Large Data Center Leaf-Spine Interconnections
Used for high-speed leaf switch uplinks to data center spine switches, supporting short-reach multimode fiber for rack-to-rack leaf-spine connections and long-distance single-mode fiber for cross-row or cross-building data center interconnections.
Inter-Facility & Cross-Building Backbone Links
Deploy long-range 100G QSFP28 single-mode optical transceivers to establish high-bandwidth inter-building fiber backbone connections within large enterprise campus or multi-site data center estates.
Flexible Mixed-Speed Migration via Breakout Cables
Deploy 100G-to-4×25G breakout QSFP28 cables to split each 100G port into four independent 25G uplinks, supporting gradual network bandwidth upgrades and mixed 25G / 40G / 100G hybrid uplink architectures without hardware replacement.
6. Regulatory & Compliance Certifications
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Electrical Safety Standards: UL 60950-1, CSA C22.2 No.60950-1, IEC/EN 60950-1
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EMC & EMI Standards: CE Mark, FCC Part 15 Class A, ICES-003 Class A, VCCI Class A, CISPR 22 Class A, CISPR 24, full EN 61000 series ESD, surge, radiated and conducted immunity compliance
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Environmental Directives: EU RoHS 2.0 hazardous substance restriction compliant, EU WEEE waste electronics recycling directive compliant
7. Standard Factory Packaging Contents
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C9300-NM-2X100G two-port 40G/100G QSFP28 uplink network module
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Integrated extraction lever and captive retention screws for secure rear-slot installation
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ESD anti-static protective packaging and ESD wrist strap for static-safe hardware handling
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Hardware installation quick-start guide covering hot-swap procedures, QSFP28 transceiver and breakout cable installation, and basic HundredGigabitEthernet / TwentyFiveGigabitEthernet port configuration steps
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Full global regulatory compliance and certification documentation packet
Supplementary UNSPSC Classification Code
43222503 – Cisco C9300-NM-2X100G hot-swappable 2-port 40G/100G QSFP28 uplink expansion network module for Catalyst 9300X series enterprise stackable fiber switches, supporting StackWise-1T high-speed stacking, QSFP28 breakout to 4×25G lanes, DOM optical monitoring, MACsec link encryption, full IOS XE Layer2/Layer3 feature support, hot-swap maintenance, designed for large enterprise campus aggregation, medium/large data center leaf-spine uplink and inter-building fiber backbone deployments.
Standard Hardware Warranty Information
All factory-new C9300-NM-2X100G network modules include a 1-year limited hardware warranty covering manufacturing defects and component failures under rated standard operating environmental conditions. Cisco Smart Net Total Care extended service contracts are available, providing 24×7 priority Cisco TAC technical support, advance genuine spare hardware replacement service, validated stable IOS XE firmware upgrade releases, and comprehensive switch configuration and network fault troubleshooting support.
