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C9300-48UB-A
Catalyst 9300 48-port UPOE Deep Buffer, Network Advantage
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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.
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.
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.
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.
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| C9300-48UB-A |  C9300L-48UXG-2Q-E |  C9300L-48T-4X-A |  C9300-48UN-A |  C9300-48UXM-E | |
|---|---|---|---|---|---|
| Depth | 12.2 inches | 11 inches | 449 mm | 18.25 inches | 564 mm |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | Gigabit Ethernet | 10/100/1000 | 10 Gigabit Ethernet |
| Form Factor | Rack-mount | Rack-mount | Rack-Mount 1U | Rack-mount | Rack-Mount 1U |
| Height | 1.73 inches | 1.75 inches | 44 mm | 1.73 inches | 44 mm |
| 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 / Fiber | Twisted Pair | Twisted Pair / Fiber |
| Memory | 4 GB | 4 GB | 8 GB DRAM / 16 GB Flash | 4 GB | 8 GB DRAM / 16 GB Flash |
| Power Source | Redundant Power Supply / AC Power Supply | AC Power Supply | AC | AC Power Supply | AC |
| Product Type | Switch | Switch | Network Switch | Switch | Network Switch |
| Rack Units | 1 RU | 1 RU | 1U | 1 RU | 1U |
| Switching Capacity | 1440 Gbps | 480 Gbps | 176 Gbps | 480 Gbps | 580 Gbps |
| Weight | 28 lbs | 22 lbs | 7.0 kg | 24 lbs | 9.34 kg |
| Width | 17.5 inches | 17.5 inches | 445 mm | 17.5 inches | 445 mm |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
UPOE deep buffer design handles heavy traffic well.
Advanced features perform as expected.
Stable access platform.
Good campus deployment choice.
Predictable performance.
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.
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.
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.
The Network Advantage license unlocks advanced features including full Layer 3 routing, dynamic segmentation, advanced QoS, policy-based automation, and advanced security capabilities.
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.
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.
The C9300-48UB comes with dual field-replaceable AC power supplies (1,100W each) and supports redundant configurations to ensure uninterrupted UPOE power delivery.
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.
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.
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.
High availability is achieved through StackWise stacking, dual redundant power supplies, hot-swappable fans and power modules, nonstop forwarding (NSF), and Stateful Switchover (SSO).
UPOE requires standard Cat5e or higher Ethernet cables, which support 60W per port without the need for additional power infrastructure or proprietary connectors.
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.
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.
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.
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.
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