C9300X-12Y-E – 12×1/10/25G SFP28 Ports – Modular Uplink Options – Network Essentials

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Cisco C9300X-12Y-E Compatible Accessories, Modules & Spare Parts

Find compatible network modules, power supplies, fans, optics, cables and spare parts for the Cisco C9300X-12Y-E. These accessories support fiber connectivity, hardware replacement, spare inventory and network maintenance projects.

Optics & Cables Compatible with Cisco C9300X-12Y-E


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C9300X-12Y-E Description

C9300X-12Y-E
  The Cisco Catalyst C9300X-12Y-E is a high-density, data-only fiber access switch designed for campus and data-center edge deployments requiring ultra-high throughput and flexible uplink configurations. It features 12 SFP28 fiber ports that support multi-rate operation at 25 Gbps, 10 Gbps, or 1 Gbps, enabling seamless migration to higher-speed optics as network demands grow. Uplink connectivity is modular: customers can choose from any combination of C9300X network modules—such as 8×25 G/10 G/1 G SFP (NM-8Y), 2×100 G/40 G QSFP (NM-2C), or 4×100 G/40 G QSFP (NM-4C)—to architect optimal aggregation or core layer connectivity without forklift upgrades. 

Product Performance

Ethernet Ports
Switching Capacity
Forwarding Rate

Quick Specs

Parameter

Specification

Model

C9300X-12Y-E

Switching Capacity

1,000 Gbps standalone / 2,000 Gbps stacked

Forwarding Rate

744.04 Mpps standalone / 1,488 Mpps stacked

Downlink Ports

12 × multi-rate SFP28 (25 G/10 G/1 G) fiber

Uplink Module Slots

4 slots (choose from NM-8Y, NM-2C, NM-4C)

Stacking Bandwidth

StackWise-1T (1 Tbps per stack link)

DRAM

16 GB

Flash Storage

16 GB

Power Supply

1 × 715 W AC (PWR-C1-715WAC-P)

Key Features

Modular Uplink Architecture

Four module slots support NM-8Y (8×25 G/10 G/1 G SFP), NM-2C (2×100 G/40 G QSFP), or NM-4C (4×100 G/40 G QSFP), enabling tailored aggregation path and investment protection.

StackWise-1T Technology

Stack up to eight switches with 1 Tbps per stack link (2 Tbps total), enabling unified management and seamless scale-out. Mixed stacking with Catalyst 9300 at StackWise-480 speeds is supported.

High-Speed SFP28 Fiber Ports

Twelve multi-rate ports running at 25 Gbps, 10 Gbps, or 1 Gbps, delivering line-rate 25 GbE for high-density uplink or server aggregation.

UADP 2.0Sec ASIC

Provides 100 Gbps hardware IPsec and up to 100 Gbps MACsec, enabling high-performance encryption without CPU offload.

Advanced Security Suite

Hardware-anchored Secure Boot, SUDI, MACsec 256-bit, Encrypted Traffic Analytics (ETA), and Cisco TrustSec for zero-trust segmentation.

Model-Driven Telemetry

Real-time streaming via gNMI/YANG, flexible NetFlow, and Cisco Live-Upgrade for proactive assurance and rapid troubleshooting.

Application Scenarios

Data-Center Leaf Aggregation

Acts as a 12×25 Gbps fiber leaf in small-scale spine-leaf fabrics, aggregating multiple 10 GbE server links.

Campus Core/Distribution

Provides high-performance 25 GbE fiber interconnect to distribution or core, with modular uplink flexibility for 100 Gbps migration.

Cloud-Managed Campus Edge

Delivers high-throughput fiber access at building entrances, integrated with Cisco DNA Center for zero-touch provisioning and real-time analytics.

Product Comparison

Parameter

C9300X-12Y-E

C9300X-24Y-E

C9300X-48TX-M

Downlink Ports

12 × 25 G/10 G/1 G SFP28

24 × 25 G/10 G/1 G SFP28

48 × 10 G/1 G mGig SFP+ (10 G/5 G/2.5 G/1 G/100 M)

Uplink Module Slots

4 modular slots (e.g., NM-8Y, NM-2C, NM-4C)

4 modular slots

4 modular slots (e.g., NM-8M, NM-2C, NM-4C)

Switching Capacity

1,000 Gbps standalone / 2,000 Gbps stacked

2,000 Gbps standalone / 3,000 Gbps stacked

1,760 Gbps standalone / 2,760 Gbps stacked

Forwarding Rate

744.04 Mpps standalone / 1,488 Mpps stacked

1,488 Mpps standalone / 2,232 Mpps stacked

1,309 Mpps standalone / 2,232 Mpps stacked

Stacking Bandwidth

1 Tbps (StackWise-1T)

1 Tbps (StackWise-1T)

1 Tbps (StackWise-1T)

DRAM

16 GB

16 GB

16 GB

Flash Storage

16 GB

16 GB

16 GB

Power Supply

1 × 715 W AC (PWR-C1-715WAC-P)

1 × 715 W AC (PWR-C1-715WAC-P)

1 × 715 W AC (PWR-C1-715WAC-P)

License Image

Network Essentials (“-E”)

Network Essentials (“-E”)

Meraki Advanced (“-M”)

Switch Rear Panel

The switch rear panel includes StackWise connectors, StackPower or XPS connectors, ports, fan modules, and power supply modules.

1

Ground connectors

7

StackPower connectors

2

USB3.0–SSD port

8

AC OK (input) status LED

3

BEACON LED

9

PS OK (output) status LED

4

CONSOLE (RJ-45 console port)

10

StackWise-480 port connectors

5

MGMT (RJ-45 10/100/1000 management port)

11

Power supply modules

6

Fan modules

Rear Panel of a Cisco Catalyst 9300 Series Switch

Components Delivered in the Shipping Box

The shipping box contains the model of the switch you ordered and other components needed for installation. Some components are optional, depending on your order.

1

Cisco Catalyst 9300 Series switch with optional network module1 (power supply and fan modules not shown)

9

Eight number-8 Phillips flat-head screws

2

AC power cord

10

Cable guide

3

Product documentation and compliance document

11

M4.0 x 20mm Phillips pan-head screw

4

Four rubber mounting feet

12

(Optional) RJ-45 console cable

5

Ground lug screw and ring terminal

13

(Optional) USB console cable

6

Two 19-inch mounting brackets

14

(Optional) StackWise-480/1T cable (0.5-meter, 1-meter, or 3-meter)

7

Four number-12 pan-head screws

15

(Optional) StackPower cable (0.3-meter or 1.5-meter)

8

Four number-10 pan-head screws

16

(Optional) StackWise-320 cable

cisco-catalyst-9300-switch-shipping-box

Specifications

Packaging weight and dimensions included:
Weight 15.24 kg
Dimensions 58 × 57 × 24 cm
Parameter Specification Parameter Specification
Model C9300X-12Y-E Chassis Dimensions (H×W×D) – chassis only 4.4 × 44.5 × 40.9 cm (1.73″×17.5″×16.1″)
Chassis Dimensions with default PSU 4.4 × 44.5 × 44.7 cm (1.73″×17.5″×17.6″) Chassis Dimensions with secondary PSU 4.4 × 44.5 × 48.8 cm (1.73″×17.5″×19.2″)
Weight (with default PSU) 6.80 kg (15.0 lb) DRAM 16 GB
Flash Storage 16 GB MAC Address Table 32,000 entries
IPv4 Routes 39,000 (24,000 direct + 15,000 indirect) IPv6 Routing Entries 19,500 entries
Multicast Routing Scale 8,000 entries QoS Scale Entries 4,000 entries
ACL Scale Entries 8,000 entries Packet Buffer 16 MB
Flexible NetFlow Entries 64,000 flows VLAN IDs 4,094
Total SVIs 1,000 Jumbo Frame Support Up to 9,198 bytes
Switching Capacity 1,400 Gbps Switching Capacity (with stacking) 2,400 Gbps
Forwarding Rate 1,041 Mpps Forwarding Rate (with stacking) 1,785 Mpps
Downlink Ports 12 × 25G/10G/1G SFP28 Uplink Slots 4 × modular SFP28 slots
Default Power Supply PWR-C1-715WAC-P (715 W AC) Available PoE None
MTBF 265,650 hours Operating Temperature −5 °C to +45 °C
Storage Temperature −40 °C to +70 °C AC Input Voltage 100–240 VAC, 50–60 Hz
Host CPU x86 4-core SUDI Support Secure Universal Device ID
Trustworthy System Secure Boot Software License Network Essentials

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Need pricing, stock, or shipping details for the C9300X-12Y-E ? Layer23-Switch can help you check current availability, lead time, and delivery options for this. Send us the part number, quantity, and destination country via live chat or email sales@layer23-switch.com for a fast quotation.

Quality Certifications

Customer Reviews

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    Alan Holmes
    Posted on 24/04/2026
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    4.0

    Fair pricing combined with genuine product is rare. Layer23 delivers both. Took a little longer to clear customs than expected, otherwise excellent.

    Ahmed Hamilton
    Posted on 14/04/2026
    Verified Buyer
    5.0

    Every aspect of the product looked professional and well-made.

    Chen Gray
    Posted on 21/03/2026
    Verified Buyer
    5.0

    Layer23 has earned the right to be our preferred supplier.

    Supply Chain
    Posted on 20/10/2025
    Verified Buyer
    5.0

    Clear customs quickly. Good paperwork.

    IT Director
    Posted on 10/09/2025
    Verified Buyer
    5.0

    Verified genuine. We only buy authentic gear.

Questions & Answers

  • What does C9300X-12Y-E provide on the front panel?

    C9300X-12Y-E provides 12 SFP28 downlink ports for 1G, 10G, or 25G fiber connections, with modular uplink expansion and a Network Essentials base license.
  • Is C9300X-12Y-E a PoE access switch?

    C9300X-12Y-E is not a PoE copper access switch; it targets fiber aggregation, server handoff, or high-speed access designs that need 12 SFP28 ports.
  • How is C9300X-12Y-E different from C9300X-12Y-A?

    C9300X-12Y-E uses the same 12-port SFP28 hardware as C9300X-12Y-A, while the E suffix identifies the Network Essentials software level.
  • What uplink planning matters for C9300X-12Y-E?

    C9300X-12Y-E has modular uplinks, so port planning separates the 12 SFP28 downlinks from the chosen C9300X network module for 10G, 25G, 40G, 100G, or mGig expansion.
  • Can C9300X-12Y-E run in a StackWise design?

    C9300X-12Y-E supports StackWise-1T in a pure C9300X stack and can operate at lower stack bandwidth when mixed with compatible modular Catalyst 9300 members.
  • Which optics question matters most for C9300X-12Y-E?

    C9300X-12Y-E buyers often check whether SFP28 ports will run at 25G, 10G, or 1G with the exact Cisco transceiver and peer-device speed settings.
  • When does C9300X-12Y-E fit fiber-heavy designs?

    C9300X-12Y-E fits fiber-heavy closets, small aggregation layers, and server-facing connections where SFP28 density matters more than UPOE+ or RJ-45 endpoint power.
  • What power and rack details affect C9300X-12Y-E ordering?

    C9300X-12Y-E ships as a modular-uplink C9300X fiber switch with a 715W AC power supply class, field-replaceable fans, and separate choices for uplink modules and optics.

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DataSheet Downloads

  • C9300X-12Y-E Datasheet

  • Cisco Catalyst 9300 Switch Datasheet