Cisco C9300X-NM-4C Network Module

Cisco C9300X-NM-4C Network Module Overview

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The Cisco C9300X-NM-4C Network Module is a high-speed
uplink expansion module designed for selected Cisco Catalyst 9300X
enterprise switches. Featuring four dual-rate 40 Gigabit Ethernet
and 100 Gigabit Ethernet QSFP ports, this module provides additional
high-bandwidth connectivity options for enterprise campus networks,
aggregation environments, and demanding switching infrastructures.
It is designed for organizations that require flexible uplink capacity
and high-speed connections between compatible network devices.

With four QSFP interfaces, the C9300X-NM-4C can support network designs
requiring multiple high-speed links, subject to the selected optics,
cabling, host-switch configuration, and Cisco compatibility requirements.
It is particularly relevant for deployments built around compatible
Catalyst 9300X platforms, including the
Cisco C9300X-24Y-E,
Cisco C9300X-48HX,
and
Cisco C9300X-48TX.

When selecting a network module, compatibility should always be checked
against the complete switch model number. The C9300X-NM-4C is not a
universal uplink module for every Cisco Catalyst switch. Cisco specifies
that it is compatible only with the C9300X-24Y, C9300X-48HX, and
C9300X-48TX models. Confirm the exact hardware configuration and
software requirements before ordering.

Key Features of the Cisco C9300X-NM-4C

Four High-Speed QSFP Ports

The C9300X-NM-4C provides four QSFP port slots designed for supported
40G and 100G Ethernet connections. This four-port configuration gives
compatible Catalyst 9300X switches additional high-speed uplink options
for connecting network infrastructure, aggregation equipment, and other
supported Ethernet devices. The number of active connections and their
operating speeds depend on the host switch, supported optics or cables,
and the selected configuration.

40 Gigabit and 100 Gigabit Ethernet

Each interface is designed for dual-rate 40G/100G operation in supported
configurations. This flexibility can help network teams select a suitable
connection speed according to bandwidth requirements, connected hardware,
and network design. Before deployment, verify the supported transceiver
or cable type, link distance, interface configuration, and compatibility
with the equipment at the other end of each link.

Designed for Selected Catalyst 9300X Switches

Cisco designed the C9300X-NM-4C for a specific group of Catalyst 9300X
switches. It is supported on the C9300X-24Y, C9300X-48HX, and C9300X-48TX.
It should not be assumed to work with standard Catalyst 9300, Catalyst
9300L, Catalyst 9300LM, Catalyst 9200, or other switch families simply
because they have a similar network-module slot.

Flexible Uplink Planning

Four high-speed ports can give network designers additional options when
planning uplinks between compatible switches and other supported
infrastructure. Depending on the network architecture, these interfaces
may be assigned to separate links, redundant paths, or other approved
connectivity designs. Actual redundancy, routing, and resiliency behavior
depends on the host switch and the network configuration rather than
on the module alone.

Cisco C9300X-NM-4C Technical Specifications

The following table summarizes the principal specifications relevant
to purchasing and deployment. For configuration-specific details,
consult the manufacturer’s documentation for the exact host switch.

Compatibility: Which Switches Support C9300X-NM-4C?

Switch compatibility is one of the most important considerations when
purchasing this module. Cisco’s published Catalyst 9300 Series data
sheet identifies three compatible switch models for the C9300X-NM-4C.
Verify the complete model identifier on the switch label or purchase
documentation before placing an order.

Supported Switch Models

Cisco Catalyst C9300X-24Y

The C9300X-24Y platform is one of the specified compatible models.
Explore the
Cisco C9300X-24Y-E
product page to review the related switch option and confirm that the
exact model you intend to use matches the manufacturer’s compatibility
requirements.

Cisco Catalyst C9300X-48HX

The C9300X-48HX is another supported host model. If your project uses
this platform, review the
Cisco C9300X-48HX
product information and verify the required module, optics, and software
configuration before deployment.

Cisco Catalyst C9300X-48TX

The C9300X-48TX is also included in Cisco’s compatibility list for this
module. You can review the
Cisco C9300X-48TX
product page when planning a compatible switching configuration.

Models That Should Not Be Assumed Compatible

The following products belong to related Cisco switching families or
have different hardware configurations. They should not be treated as
compatible hosts for C9300X-NM-4C unless Cisco explicitly documents
support for the exact model.

• Cisco C9300X-48HXN
  — a distinct model from C9300X-48HX.
• Cisco Catalyst C9300-48T
  — standard Catalyst 9300 family.
• Cisco Catalyst C9300-48S
  — standard Catalyst 9300 family.
• Cisco Catalyst C9300-24S
  — standard Catalyst 9300 family.
• Cisco Catalyst C9300L-48PF-4X
  — Catalyst 9300L family.
• Cisco Catalyst C9300LM-48UX-4Y
  — Catalyst 9300LM family.

These related products can be useful when comparing network platforms,
but they are not substitutes for confirming compatibility. Network-module
support depends on the exact switch hardware, not simply on the Catalyst
name or the presence of an uplink bay.

Comparing Cisco Catalyst Network Modules

Cisco offers several network modules for different uplink speeds,
interface types, and host-switch platforms. The C9300X-NM-4C is intended
for deployments that require four 40G/100G QSFP interfaces on one of its
specified compatible switches. Other modules target different
connectivity requirements.

Related Network Modules at NexoGet

Review these related products to compare interface types and network
expansion options. Each module must be matched to a supported host
switch before ordering.

• Cisco C9300X-NM-2C
  — two 40G/100G QSFP ports.
• Cisco C9300X-NM-8Y
  — eight multi-rate SFP-family ports.
• Cisco C9300X-NM-8M
  — eight multigigabit copper module ports.
• Cisco C9200-NM-2Y
  — network module for supported Catalyst 9200 switches.
• Cisco C9200-NM-2Q
  — related network-module option; confirm the precise platform support.
• Cisco C9200-NM-4G
  — four-port 1G module for supported Catalyst 9200 models.
• Cisco C9200-NM-4X
  — related uplink module for its supported platform.
• Cisco C9200-NM-BLANK
  — a related blanking-module product for supported switches.

Applications of the Cisco C9300X-NM-4C

Enterprise Campus Networks

In enterprise campus environments, high-speed uplinks can connect
compatible access or distribution infrastructure to other network
layers. The four-port design of the C9300X-NM-4C gives network architects
additional interface options when planning supported 40G or 100G links.
The final design should account for traffic demand, redundancy,
transceiver selection, link distance, and the capabilities of the
connected equipment.

Network Aggregation

Aggregation networks combine traffic from multiple switches and deliver
it toward upstream network infrastructure. Where the host platform and
connected devices support the required interfaces, the C9300X-NM-4C
can provide multiple high-speed connections for aggregation designs.
Network engineers should confirm that the chosen topology, interface
configuration, and routing or switching features are supported by the
host switch.

High-Bandwidth Infrastructure Links

Some enterprise applications require links with greater capacity than
conventional 1G or 10G connections. Supported 40G and 100G QSFP
interfaces can be appropriate for high-bandwidth paths between
compatible network devices. Actual throughput and availability depend
on the full end-to-end link, including optics or cables, configuration,
remote equipment, and the host switch.

Network Refresh and Expansion Projects

Organizations upgrading existing switching infrastructure should evaluate
both the current port requirements and expected future demand. The
C9300X-NM-4C may be suitable when the existing or planned host switch is
one of the supported models and the design requires multiple 40G/100G
connections. It should not be selected solely because it has more ports
than a two-port alternative; verify compatibility and actual interface
requirements first.

Installation and Configuration Considerations

Verify the Host Switch Model

Before installation, confirm that the switch is a C9300X-24Y,
C9300X-48HX, or C9300X-48TX. Similar model names do not guarantee
hardware compatibility. If the switch label, bill of materials, or
product quote uses a different suffix, consult Cisco’s official
documentation before proceeding.

Choose Supported Optics and Cables

QSFP interfaces require compatible transceivers or cables for the
intended connection. Select the media type and reach according to
the link design and the supported Cisco compatibility matrix. Confirm
the speed and interface type at both ends of the link; matching the
connector shape alone is not enough to guarantee interoperability.

Review Software and Interface Requirements

Confirm the Cisco IOS XE release and relevant configuration guidance
for the host switch. Features and supported combinations may vary by
hardware and software release. Where a design uses specialized interface
configurations, consult the official documentation and validate the
proposed configuration before deploying it in production.

Follow Hardware Installation Guidance

Use Cisco’s installation documentation and the procedures specified for
the host switch. Follow the applicable precautions for handling network
hardware and optical components. If the module is being installed as
part of a production-network upgrade, plan the maintenance window and
verify the configuration and link status after installation.

Why Choose NexoGet for Cisco Networking Hardware?

NexoGet provides an online catalog for networking hardware and related
infrastructure products. Buyers can review related Cisco switching
products, compare available platform options, and contact the team to
confirm product details before ordering. For the C9300X-NM-4C, confirming
the exact part number, compatibility, stock condition, package contents,
and shipping arrangements is especially important.

Visit the
NexoGet online shop
to browse available networking products. For background information,
see
What Is a Cisco Switch?
and explore the wider catalog for compatible or alternative network
equipment.

You can also review the
About Us
page to learn more about NexoGet, or use the
Contact Us
page to request a quotation and clarify availability, condition,
shipping, and product documentation.

Frequently Asked Questions

What is the Cisco C9300X-NM-4C?

The Cisco C9300X-NM-4C is a Catalyst 9300X network module with four
dual-rate 40G/100G QSFP ports. It is designed to provide high-speed
uplink connectivity on specifically supported Catalyst 9300X switches.

How many ports does the C9300X-NM-4C have?

It has four QSFP port slots. The supported speed and operation of each
interface depend on the host switch, connected optics or cables,
and the applicable Cisco configuration requirements.

Which switches are compatible with the C9300X-NM-4C?

Cisco identifies the C9300X-24Y, C9300X-48HX, and C9300X-48TX as
compatible host models. Always verify the complete model number and
current manufacturer documentation before ordering.

Is the C9300X-NM-4C compatible with the standard Catalyst 9300?

Do not assume so. Cisco distinguishes Catalyst 9300X network modules
from modules intended for the standard Catalyst 9300 family. The
C9300X-NM-4C is specified for selected Catalyst 9300X models only.

Does the module include QSFP transceivers?

The part number alone does not establish whether transceivers or cables
are included in a seller’s package. Confirm the exact package contents
and any separately required accessories before purchasing.

Can the C9300X-NM-4C operate as a standalone device?

No. It is a network module that requires a compatible host switch.
It does not operate as an independent Ethernet switch.

Where can I find official technical information?

Consult Cisco’s Catalyst 9300 Series data sheet and hardware installation
guide for module specifications, compatibility, installation guidance,
and applicable restrictions.

Official Cisco Documentation

For the most reliable compatibility and technical information, consult
the manufacturer resources below before purchasing or installing the
C9300X-NM-4C.

• 
  Cisco Catalyst 9300 Series Switches Data Sheet
  
  — network module descriptions and supported switch models.
• 
  Cisco Catalyst 9300 Hardware Installation Guide
  
  — network module installation information.

Order Cisco C9300X-NM-4C from NexoGet

Looking for the Cisco C9300X-NM-4C Network Module for an enterprise
switching project? Contact NexoGet to confirm current availability,
product condition, pricing, package contents, and shipping options.
Provide the complete host-switch model when requesting a quotation
so compatibility can be checked before the order is finalized.

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