C9300-24U-A – 24x1G UPOE Ports – Modular Uplink – 830W PoE Budget – Network Advantage

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C9300-24U-A Description

The C9300-24U-A is a Cisco Catalyst 9300 Series stackable access switch for wiring closets that power endpoints drawing up to 60W over 24 Gigabit copper ports. The switch has 24 10/100/1000 Cisco UPOE ports, an 830W PoE budget on the default 1100W supply, a modular uplink slot and 208 Gbps of switching capacity. The -A suffix carries Network Advantage, which adds BGP, VXLAN, MPLS and MACsec-256 to the Layer 2 and routed-access functions of Network Essentials.

Quick Specs

Parameter

Specification

Product ID

C9300-24U-A

Product type

Stackable access switch with modular uplinks

Downlink ports

24 x 10/100/1000 Cisco UPOE copper ports

Uplink architecture

Modular uplink slot for Cisco Catalyst 9300 network modules

Network license

Network Advantage

Default power supply

PWR-C1-1100WAC-P

Default PoE budget

830W

Stacking architecture

StackWise-480

StackPower

Supported

Expanded PoE budget

1440W with supported secondary power supply configuration

Switching capacity

208 Gbps standalone; 688 Gbps with stacking

Forwarding rate

154.76 Mpps standalone; 511.90 Mpps with stacking

Product Performance

Powered Access Port Profile
Default PoE Budget
Standalone Switching Capacity

Key Features

UPOE Budget Across 24 Ports

Each port can deliver up to 60W, and the default 1100W supply leaves 830W for PoE, about 34W per port if all 24 draw power at once. A second 1100W supply lifts the budget to 1440W, which covers a full 60W on every port.

Modular Uplink Slot

Uplinks come from a Catalyst 9300 network module such as the 8 x 10G/1G SFP+ C9300-NM-8X or the 2 x 40G C9300-NM-2Q, and the default configuration ships without one. Changing uplink speed later means swapping the module rather than the switch.

StackWise-480 And StackPower

Up to eight switches join one stack over 480 Gbps StackWise cables, and members must carry the same license level. StackPower links up to four switches in a ring so their supplies share one power pool.

Network Advantage Feature Set

Network Advantage adds BGP, IS-IS, VRF, VXLAN, LISP, MPLS, NETCONF and RESTCONF on top of Network Essentials. It also supports MACsec-256, where Network Essentials stops at MACsec-128.

Single Supply, Optional Second

The default 1100W supply sets the 830W budget, and a second supply is optional rather than required for UPOE. Adding one raises the budget and gives power redundancy.

Dual Power Supply And Three Fans

Two supply slots allow redundancy, though the switch ships with a single supply in slot 1. Three field-replaceable fans provide N+1 cooling.

Application Scenarios

UPOE Endpoints In A Floor Closet

A floor closet running UPOE-class endpoints such as video phones and displays can power them directly from the 24 copper ports and carry their traffic to the distribution layer through the uplink module.

Routed Campus Access Stack

A campus building can stack several of these switches into one StackWise-480 unit, with Network Advantage providing the BGP, VXLAN and MPLS functions that a segmented access layer calls for.

Closet With Mixed Uplink Speeds

Where closets differ in how far they sit from the core, the same 24-port switch takes a 1G, 10G, 25G or 40G network module to match each fiber run.

Product Comparison

Parameter

C9300-24U-A

C9300-24U-E

C9300-24P-A

C9300-48U-A

Total 10/100/1000, Multigigabit copper or SFP fiber

24 x 10/100/1000 UPOE

24 x 10/100/1000 UPOE

24 x 10/100/1000 PoE+

48 x 10/100/1000 UPOE

Uplink configuration

Modular uplinks

Modular uplinks

Modular uplinks

Modular uplinks

Network license

Network Advantage

Network Essentials

Network Advantage

Network Advantage

Default AC power supply

PWR-C1-1100WAC-P

PWR-C1-1100WAC-P

PWR-C1-715WAC-P

PWR-C1-1100WAC-P

Available PoE power with default power supply

830W

830W

445W

822W

Maximum PoE power with 1100W secondary PS

1440W

1440W

720W

1800W

Stack bandwidth

480 Gbps

480 Gbps

480 Gbps

480 Gbps

Switching capacity

208 Gbps

208 Gbps

208 Gbps

256 Gbps

C9300-24U-A and C9300-24U-E share the same 24-port UPOE hardware, 830W default PoE budget and StackWise-480 support, and differ only in Network Advantage versus Network Essentials, so a site that can run on Essentials can order C9300-24U-E and give up the Advantage tier. Cisco lists no downgrade PID, only the Essentials-to-Advantage upgrade through C9300-LIC=. Where every powered device is PoE+ class, C9300-24P-A fits, with a 715W default supply and 445W of PoE against 830W. Above 24 ports, C9300-48U-A offers 48 UPOE ports on an 822W default budget and 256 Gbps standalone switching against 208 Gbps.

PoE Power Planning

Planning Item

Cisco Confirmed Value

Order Impact

Default PoE budget

C9300-24U-A is listed with 830W available PoE and a PWR-C1-1100WAC-P default supply

Match the endpoint count and power draw to the 830W switch-level budget

Power supply slots

Catalyst 9300 switches use two internal power supply module slots

Decide whether the second slot needs a redundant supply or a blank module

UPOE versus PoE+

C9300-24U-A is the Cisco UPOE model, while C9300-24P-A is the PoE+ model

Prevent a lower-power PoE+ order line from replacing a UPOE requirement

StackPower

C9300-24U-A supports StackPower

Add StackPower cables only when the stack power design requires shared power

Ordering Checklist

  • Subscription: Select C9300-DNA-A-24-3Y, -5Y or -7Y, the 24-port Cisco DNA Advantage term. New orders need a subscription of the same tier as the network license, and the configurator defaults to Advantage with a 5-year term.
  • Uplink module: Keep the default C9300-NM-8X, choose another C9300-NM module, or select C9300-NM-NONE. The uplink slot ships with C9300-NM-8X unless changed.
  • Second power supply: A second PWR-C1-1100WAC-P is added by default; C9300-SPS-NONE removes it. Without it the PoE budget stays at 830W instead of up to 1440W.
  • Stack and StackPower cables: A 50 cm StackWise cable and a 30 cm StackPower cable are added by default; C9300-STACK-NONE and C9300-SPWR-NONE remove them. A stack needs a StackWise cable of the right length, so a stand-alone switch can drop both.
  • Power cords: Select the cord type for the destination country. Two cords ship, and the configurator defaults to North American cords.

Optional Add-ons

Model

Description

C9300-NM-4G

Catalyst 9300 4 x 1GE SFP network module

C9300-NM-8X

Catalyst 9300 8 x 10G/1G SFP+ network module

C9300-NM-2Q

Catalyst 9300 2 x 40GE QSFP network module

C9300-NM-2Y

Catalyst 9300 2 x 25G/10G/1G SFP28 network module

C9300-NM-4M

Catalyst 9300 4 x 10G/mGig copper network module

PWR-C1-1100WAC-P=

1100W AC Platinum-rated power supply spare

PWR-C1-1900WAC-P=

1900W AC Platinum-rated power supply spare

STACK-T1-50CM=

Cisco StackWise-480/1T 50 cm stacking cable spare

STACK-T1-1M=

Cisco StackWise-480/1T 1 m stacking cable spare

CAB-SPWR-30CM=

Cisco Catalyst StackPower cable 30 cm spare

CAB-SPWR-150CM=

Cisco Catalyst StackPower cable 150 cm spare

Specifications

Parameter Specification Parameter Specification
Product ID C9300-24U-A Product type Stackable access switch with modular uplinks
Network license Network Advantage Downlink ports 24 x 10/100/1000 Cisco UPOE copper ports
Default PoE budget 830W Default power supply PWR-C1-1100WAC-P
Minimum software release Cisco IOS XE Everest 16.5.1a Power supply slots 2 internal power supply module slots
Uplink architecture Optional hot-swappable Cisco Catalyst 9300 network module Network module included Default switch configuration does not include the network module
Supported network modules C9300-NM-4G, C9300-NM-8X, C9300-NM-2Q, C9300-NM-2Y, C9300-NM-4M Fan modules 3 field-replaceable fans
Stacking architecture StackWise-480 StackPower Supported
Switching capacity 208 Gbps standalone Switching capacity with stacking 688 Gbps
Forwarding rate 154.76 Mpps standalone Forwarding rate with stacking 511.90 Mpps
DRAM 8 GB Flash 16 GB
MAC addresses 32,000 IPv4 routes 32,000
VLAN IDs 4094 Jumbo frames 9198 bytes
Dimensions 1.73 x 17.5 x 19.2 in. (4.4 x 44.5 x 48.8 cm) Weight 7.54 kg (16.63 lb)

Quality Certifications

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    Albert Simmons
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    We checked the product carefully on arrival. No issues found.

    Albert Allen
    Posted on 31/01/2026
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    4.0

    We’ve never had a reorder go wrong with Layer23. That’s saying something.

    Leila Edwards
    Posted on 11/01/2026
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    5.0

    Layer23 shipped ahead of the quoted lead time. Pleasant surprise.

    IT Director
    Posted on 10/09/2025
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    5.0

    Verified genuine. We only buy authentic gear.

    Bucky Barnes
    Posted on 12/07/2025
    Verified Buyer
    5.0

    Solid shipping. No damage. Reliable.

Questions & Answers

  • Can C9300-24U-A be stacked?

    Yes. C9300-24U-A stacks up to 8 switches over 480 Gbps StackWise cables, and members must carry the same license level. StackPower links up to 4 switches in a ring so their supplies share one power pool.
  • What does Network Advantage on C9300-24U-A include?

    Network Advantage on C9300-24U-A includes BGP, IS-IS, VRF, VXLAN, LISP, MPLS, NETCONF, RESTCONF and MACsec-256, plus the Layer 2 and routed-access functions. The -A suffix carries this tier on the switch.
  • What PoE budget does C9300-24U-A reach with a 350W second power supply?

    C9300-24U-A reaches 1180W of PoE when a 350W supply is added to the default PWR-C1-1100WAC-P. A second 1100W or 1900W supply reaches 1440W, which is the UPOE ceiling for this model. Fitting a 1900W primary does not raise that ceiling, so plan endpoint counts against it.
  • Can C9300-24U-A stack with C9300-24UB-A higher-scale switches?

    No. C9300-24U-A is a standard Catalyst 9300 switch, and the higher-scale models C9300-24UB-A, C9300-24UXB-A and C9300-48UB-A can only stack with each other. Mixed stacking with them is not supported, and every member also needs the same license level.
  • What happens to PoE endpoints on C9300-24U-A during a soft reload?

    Perpetual PoE keeps UPOE endpoints powered through a soft reload, covering an upgrade, a crash or a manual reboot, and across a stack. It does not cover a power loss. Fast PoE restores power in under 30 s from stored power and needs perpetual-poe-ha configured on the port.
  • How much power reaches a device on a UPOE port of C9300-24U-A?

    Each UPOE port on C9300-24U-A sources 60W, which is IEEE 802.3bt Type 3, and a powered device receives up to 51W after cable loss. A Type 4 device connected to one of these ports is demoted to Type 3 power, so count 51W per endpoint when checking device specifications.
  • What rack depth does C9300-24U-A need with the default power supply?

    C9300-24U-A is 19.2 in deep with the default PWR-C1-1100WAC-P installed and 16.1 in deep as a bare chassis. Cisco rates its MTBF at 238,410 operating hours. Allow the full depth in the cabinet because the supply extends past the chassis.
  • Which ThousandEyes license comes with an Advantage subscription on C9300-24U-A?

    Cisco ThousandEyes Network and Application Synthetics, PID TE-EMBEDDED-T, is included by default with a 3, 5 or 7-year Cisco Catalyst or Cisco DNA Advantage subscription on C9300-24U-A, for the same term. It is not included with Network Essentials, so the tier decides whether it is added.

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DataSheet Downloads

  • C9300-24U-A Datasheet

  • Cisco Catalyst 9300 Switch Datasheet