United States$5,000,000+
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C
Calvin Brooks
5
UPOE deep buffer design handles heavy traffic well.
C9300-48UB-A=
Catalyst 9300 48-port UPOE Deep Buffer, Network Advantage
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C9300-48UB-A=
- Description:
- Catalyst 9300 48-port UPOE Deep Buffer, Network Advantage
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- Brand:
- Cisco
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- Warranty:
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- List Price:
$14,984.00
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$7,904.0047.3% off
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C9300-48UB-A= Overview
C9300-48UB-A= is an enterprise-class switch built on the robust Cisco IOS XE architecture that delivers high-performance, secure connectivity for modern networks. It features a range of power options supporting both AC power and redundant power supply modules, ensuring continuous operation in demanding environments.
C9300-48UB-A= provides 48 port 10/100/1000 Ethernet access connectivity paired with 4 fixed 1G SFP uplink ports, enabling flexible stacking and seamless scalability for both Layer 2 and Layer 3 deployments. Its high throughput, advanced performance, and versatile use cases make it an ideal choice for campus networks, branch offices, and large enterprise access networks alike.
C9300-48UB-A= price is $7,904.00, a 47.3% saving from the Cisco list price of $14,984.00. C9300-48UB-A= is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for C9300-48UB-A= for additional pricing. Browse the full Cisco Catalyst 9300 Switches series or explore all Cisco products.
C9300-48UB-A= Specifications
- Product Type
- Switch
- Power Source
- Redundant Power Supply / AC Power Supply
- Layer Supported
- Layer 2 / Layer 3
- Form Factor
- Rack-mount
- Power Consumption
- N/A
- Number of Ethernet Ports
- 24–48 Ports
- Number of Downlink Ports
- 48 Ports
- Manageable
- Managed
- Ethernet Technology
- 10/100/1000
- Media Type Supported
- Twisted Pair
- Redundant Power Supply Supported
- Yes
- Manufacturer Part Number
- C9300-48UB-A=
- Uplink Configuration
- 1G
- IOS
- IP Services
- POE Support
- Non POE
- SFP Ports
- 4 SFP Ports
- Memory
- 4 GB
- Rack Units
- 1 RU
- Interface Ports
- 10/100/1000
- Port/Expansion Slot Details
- 48 x 10/100/1000 Ethernet ports, 4 x 1G SFP uplink ports
- Flash Memory
- 256 MB
- Switching Capacity
- 1440 Gbps
- Switching Capacity with Stacking
- 480 Gbps
- Product Name
- Cisco Catalyst 9300-48UB-A
- Height
- 1.73 inches
- Width
- 17.5 inches
- Depth
- 12.2 inches
- Weight
- 28 lbs
C9300-48UB-A= Use Case
Campus Wi-Fi 6 Rollout with Catalyst 9300 48-Port UPOE Deep Buffer
In a large university campus environment, the C9300-48UB-A (Catalyst 9300 48-port UPOE Deep Buffer, Network Advantage) powers and aggregates high-density 802.11ax access points. Its UPOE ports supply up to 60 W per AP while the deep buffer absorbs traffic spikes during peak lecture times and events. Network Advantage features—such as policy-based segmentation and SD-Access automation—ensure secure, consistent access for 10,000+ concurrent users. Benefit: seamless, high-throughput Wi-Fi with simplified power-and-policy management and zero packet loss under load.
Smart Building IoT and HD Surveillance with Catalyst 9300 48-Port UPOE
In a corporate smart-building deployment, the C9300-48UB-A (Catalyst 9300 48-port UPOE Deep Buffer, Network Advantage) serves as the converged edge for environmental sensors, access-control systems, and 4K IP cameras. UPOE delivers sufficient power to all PoE devices, while the deep packet buffer sustains multiple high-definition video streams without drops. With Network Advantage segmentation, telemetry and encrypted VXLAN overlays, IT gains end-to-end visibility and granular security. Benefit: uninterrupted, high-resolution surveillance and centralized IoT management that bolster safety and operational intelligence.
Retail Edge Infrastructure for Real-Time POS and Digital Signage
A national retail chain deploys the C9300-48UB-A (Catalyst 9300 48-port UPOE Deep Buffer, Network Advantage) at its branch edge to power POS terminals, digital signage, Wi-Fi APs and queue-management kiosks. Its deep buffer smooths out transaction bursts during peak shopping hours, eliminating packet loss and checkout delays. Network Advantage provides advanced QoS, secure guest-vs-corporate segmentation, and consistent policy enforcement. Benefit: faster, reliable customer checkouts, dynamic in-store marketing updates, and unified management across 500+ locations.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
 C9300-48UB-A= |  C9300L-48UXG-2Q-E |  C9300L-48T-4X-A |  C9300-48UN-A |  C9300-48UXM-E | |
|---|---|---|---|---|---|
| Depth | 12.2 inches | 11 inches | 17.3 inches | 18.25 inches | 12.9 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 256 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.73 inches | 1.75 inches | 1.73 inches | 1.73 inches | 1.73 inches |
| IOS | IP Services | IP Services | LAN Base | LAN Base | IP Services |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Layer Supported | Layer 2 / Layer 3 | Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | C9300-48UB-A= | C9300L-48UXG-2Q-E | C9300L-48T-4X-A | C9300-48UN-A | C9300-48UXM-E |
| Media Type Supported | Twisted Pair | Twisted Pair | Twisted Pair | Twisted Pair | Twisted Pair |
| Memory | 4 GB | 4 GB | 512 MB | 4 GB | 4 GB |
| Number of Downlink Ports | 48 Ports | 48 Ports | 48 Ports | 48 Ports | 48 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports |
| POE Support | Non POE | Non POE | Non POE | Non POE | POE+ |
| Port/Expansion Slot Details | 48 x 10/100/1000 Ethernet ports, 4 x 1G SFP uplink ports | 48 x 10/100/1000 downlink ports and 2 x 10G uplink ports | N/A | 48 x 10/100/1000 Ethernet ports, 4 x 1G SFP uplink ports | N/A |
| Power Consumption | N/A | 215W | 370W | N/A | 350 W |
| Power Source | Redundant Power Supply / AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply | Redundant Power Supply / AC Power Supply |
| Product Name | Cisco Catalyst 9300-48UB-A | Cisco Catalyst 9300L-48UXG-2Q-E | Cisco Catalyst 9300L-48T-4X-A | Cisco Catalyst 9300-48UN-A | Cisco Catalyst 9300-48UXM-E |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | Yes | No | No | No | Yes |
| SFP Ports | 4 SFP Ports | Combo | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 1440 Gbps | 480 Gbps | 176 Gbps | 480 Gbps | 480 Gbps |
| Switching Capacity with Stacking | 480 Gbps | 960 Gbps | 320 Gbps | 480 Gbps | 480 Gbps |
| Uplink Configuration | 1G | 10G | 10G | 1G | 10G |
| Weight | 28 lbs | 22 lbs | 26 lbs | 24 lbs | 24 lbs |
| Width | 17.5 inches | 17.5 inches | 17.4 inches | 17.5 inches | 17.5 inches |
Reviews & Ratings
K
Kevin Alvarez
5
Advanced features perform as expected.
B
Brian Foster
4
Stable access platform.
J
Jason Wright
5
Good campus deployment choice.
M
Mark Bennett
5
Predictable performance.
Questions & Answers
What is the Cisco Catalyst 9300 48-port UPOE Deep Buffer (C9300-48UB-A=)?
The Cisco Catalyst 9300 48-port UPOE Deep Buffer (C9300-48UB-A=) is a stackable enterprise switch featuring 48 UPOE ports, enhanced packet buffering, and the Network Advantage software license for advanced networking services.
What does UPOE mean on the Catalyst 9300-48UB?
UPOE (Universal Power over Ethernet) delivers up to 60W per port, supporting high-power devices such as IP phones, access points, and security cameras over standard Ethernet cabling.
What are the benefits of the deep buffer architecture?
Deep buffer architecture allocates 12MB per port to manage congestion, minimize packet loss, and ensure consistent performance for latency-sensitive applications like voice and video.
What capabilities does the Network Advantage license provide?
The Network Advantage license unlocks advanced features including full Layer 3 routing, dynamic segmentation, advanced QoS, policy-based automation, and advanced security capabilities.
How many stacking units can the C9300-48UB support?
The Catalyst 9300-48UB supports up to eight switches in a stack using Cisco StackWise-480 or StackWise-320 technology for simplified management and high availability.
What is the switching capacity and throughput of this model?
This switch delivers up to 480 Gbps of stacking bandwidth and a switching capacity of 176 Gbps, with forwarding rates up to 130.95 Mpps to handle demanding enterprise workloads.
Which power supply options are available for this switch?
The C9300-48UB comes with dual field-replaceable AC power supplies (1,100W each) and supports redundant configurations to ensure uninterrupted UPOE power delivery.
What security features are built into the Catalyst 9300-48UB?
Security features include Cisco TrustSec for role-based access control, MACsec encryption, Secure Boot, Cisco Identity Services Engine (ISE) integration, and advanced threat defense with encrypted traffic analytics.
How can I manage and automate the Catalyst 9300-48UB?
You can manage and automate the switch using Cisco DNA Center, Cisco IOS XE CLI, REST APIs, and Cisco Prime Infrastructure for centralized configuration, monitoring, and zero-touch provisioning.
What deployment scenarios suit the 9300-48UB Deep Buffer?
Ideal deployment scenarios include enterprise campus distribution, branch aggregation, wireless backhaul, and environments requiring high-density PoE with low-latency buffering for IoT and video.
How does the switch ensure high availability?
High availability is achieved through StackWise stacking, dual redundant power supplies, hot-swappable fans and power modules, nonstop forwarding (NSF), and Stateful Switchover (SSO).
What cabling is required for UPOE on this switch?
UPOE requires standard Cat5e or higher Ethernet cables, which support 60W per port without the need for additional power infrastructure or proprietary connectors.
How do I order the Catalyst 9300-48UB-A=?
You can order the C9300-48UB-A= through authorized Cisco partners or the Cisco online store, specifying the SKU along with any desired SmartNet support and add-on software licenses.
What warranty and support options are available?
Cisco offers a limited lifetime hardware warranty with next-business-day replacement and optional SmartNet Technical Support for 24/7 access to software updates and expert assistance.
How does this model differ from the standard Catalyst 9300-48P?
Compared to the 9300-48P, the UPOE Deep Buffer model provides higher per-port power (60W vs. 30W), expanded packet buffering, and includes the Network Advantage feature set by default.
Can I upgrade the software license from Network Essentials to Network Advantage?
Yes, you can upgrade from Network Essentials to Network Advantage via a Cisco software license upgrade without replacing hardware, unlocking enhanced routing, security, and automation features.