C9300X-NM-2C - Cisco Catalyst 9300X 2 x 100G/40G dual rate QSFP Network Module

Cisco C9300X-NM-2C — Catalyst 9300X 2-Port 100G/40G QSFP Network Module

What it is

C9300X-NM-2C is a Cisco Catalyst 9300X Series uplink network module that adds 2 × high-speed QSFP ports to compatible Catalyst 9300X switches.

Each port supports 100 Gigabit Ethernet or 40 Gigabit Ethernet, giving Catalyst 9300X access switches high-bandwidth uplinks for aggregation, core connectivity, data-center interconnects, and other backbone applications.

Why buyers pick C9300X-NM-2C (plain English)

Two 100G uplinks: Gives a Catalyst 9300X switch up to two very high-speed 100GbE uplinks for demanding campus and aggregation designs.

40G backward flexibility: Each port can also operate at 40Gbps, which is useful when connecting to existing QSFP+ infrastructure.

Much more headroom than 10G uplinks: A pair of 100G links provides substantially more capacity for high-density multigigabit access switches.

Field-replaceable module: The uplink module can be selected or replaced independently of the switch, giving you more flexibility as network requirements change.

Built specifically for Catalyst 9300X: Designed for Cisco's higher-performance Catalyst 9300X platform rather than the standard C9300 uplink-module family.

60-second spec box (C9300X-NM-2C)

Ports

• 2 × QSFP uplink ports
• Dual-rate operation
• 100 Gigabit Ethernet
• 40 Gigabit Ethernet

Supported speeds

• 100G
• 40G
• Speed depends on installed optic / cable and switch configuration

Interface type

• QSFP28 for 100GbE
• Compatible 40G QSFP optics / cables supported where validated
• Hot-swappable optical and DAC options depending on transceiver

Typical optics / cabling

• 100G QSFP28 transceivers
• 40G QSFP+ transceivers
• DAC cables
• AOC cables
• Supported Cisco fiber optics depending on distance requirements

Compatibility

• Designed for Cisco Catalyst 9300X Series
• Supported only on compatible C9300X models
• Not intended for standard Catalyst 9300 network-module slots

Deployment role

• High-speed switch uplinks
• Distribution-layer connectivity
• Core connectivity
• Switch-to-switch backbone links
• High-bandwidth campus aggregation

Where it fits (and when to choose something else)

Perfect for:

• Catalyst 9300X switches needing 100G uplinks
• High-density multigigabit access deployments
• Campus aggregation links
• Core/distribution connectivity
• Networks migrating from 40G to 100G

Choose something else if:

• You need four 100G/40G ports → choose C9300X-NM-4C
• You need 25G / 10G / 1G SFP ports → choose C9300X-NM-8Y
• You need 10G multigigabit copper uplinks → choose C9300X-NM-8M
• You have a standard Catalyst 9300 rather than a 9300X → use the appropriate C9300-NM module

TL;DR

C9300X-NM-2C is a Cisco Catalyst 9300X uplink module with 2 × dual-rate QSFP ports supporting 100GbE or 40GbE — ideal for high-capacity campus, aggregation, and backbone connections.