Cisco C9300-48UXM-A vs. C9300-48T-E: Which Switch Better Suits Your Enterprise Network?

May 27 , 2025 28

When building or upgrading an enterprise network, selecting the right switch is critical. The Cisco Catalyst 9300 series stands out as a top-tier enterprise switch lineup, offering various models to meet diverse requirements. This article provides an in-depth comparison between two popular models—the C9300-48UXM-A and C9300-48T-E—to help you make an informed purchasing decision.

 Core Specifications Comparison: Performance Differences at a Glance

Let's begin with a table that clearly outlines the key technical parameters of both switches:

The table clearly shows that the C9300-48UXM-A outperforms in several critical areas, particularly in processing power, memory capacity, and PoE support.

 Feature Analysis: Beyond Just Numbers

Processing Speed & Network Efficiency:

With 480Gbps switching capacity—double that of the 48T-E—the 48UXM-A handles heavy data flows more efficiently in high-traffic environments. For businesses running frequent video conferences or cloud-intensive applications, this performance difference becomes noticeable in real-world usage.

Memory & Storage Impact:

The 48UXM-A's 8GB RAM and 16GB flash storage not only support more complex network functions but also provide ample room for future software upgrades. In contrast, the 48T-E's configuration suits small to medium businesses with well-defined current needs and no immediate expansion plans.

Practicality of PoE:

The 48UXM-A's PoE+ support powers IP phones, wireless access points, surveillance cameras, and similar devices, simplifying cabling and improving deployment flexibility. If your network includes numerous such devices, the 48UXM-A proves more cost-effective.

 Design & Build: Form Follows Function

Both switches feature the classic 1U rack-mount design typical of the Catalyst 9300 series, with high visual similarity. Key differences include:

- Thermal Design: The 48UXM-A requires enhanced cooling due to PoE support, featuring more densely arranged ventilation

- Weight Difference: Base weight is 9.3kg for 48UXM-A versus 7.1kg for 48T-E (excluding power modules)

- LED Indicators: The 48UXM-A adds PoE status lights for easier power monitoring

While aesthetic differences are minimal, these subtle design elements reflect their functional priorities.

 User Experience: An Administrator's Perspective

Configuration & Management:

Both support Cisco DNA Center unified management, but the 48UXM-A's superior processing delivers faster response during large-scale configuration changes. Network administrators report noticeably smoother web interface performance when managing networks with 100+ devices.

Noise Levels:

At full PoE load, the 48UXM-A's fan noise reaches 55dB—significantly louder than the 48T-E's 45dB—a consideration for open office environments.

Troubleshooting:

The 48UXM-A offers more detailed logging and diagnostic tools, particularly for PoE-related issues. Its built-in power monitoring helps prevent problems caused by insufficient power supply.

 Pricing & Total Cost of Ownership

Initial Purchase Cost:

Market prices typically show the 48UXM-A costing 30-40% more than the 48T-E, reflecting its performance advantages and PoE capability.

Long-Term Operational Costs:

- Power Consumption: The 48UXM-A's PoE functionality substantially increases energy use, potentially adding hundreds to annual electricity costs

- Expansion Needs: If PoE becomes necessary later, 48T-E users must purchase separate PoE injectors or replace switches—possibly exceeding the cost difference upfront

- Product Lifespan: The 48UXM-A's higher specifications extend its technological relevance, delaying upgrade requirements

Purchasing Recommendations:

- Choose the 48UXM-A if PoE is currently or likely needed within two years

- Opt for the 48T-E if PoE is unnecessary and network scale remains stable, saving initial investment

 Compatibility & Expandability

Device Compatibility:

Both switches share identical compatibility for basic networking with mainstream vendors. Key variations include:

- The 48UXM-A supports a wider range of PoE devices, including high-power equipment

- The 48T-E offers safer connectivity for non-PoE devices by eliminating accidental power delivery risks

Stacking Capability:

The 48UXM-A's StackWise-480 provides greater stacking bandwidth than the 48T-E's StackWise-320, benefiting large deployments requiring multiple stacked units.

Module Expansion:

Both accept the same network module expansions (various SFP/SFP+ optics). However, the 48UXM-A's greater processing power better accommodates future high-performance modules.

 Software Support & Ecosystem

Operating System:

Both initially run IOS-XE, but Cisco typically extends software support for high-end models like the 48UXM-A by 1-2 years for security updates.

Security Features:

The 48UXM-A's robust hardware enables concurrent operation of more advanced security features without performance degradation, including:

- Encrypted traffic analysis

- Advanced threat protection

- Granular access controls

Automation Capabilities:

While both support Cisco DNA automation, the 48UXM-A handles more complex automation policies and larger-scale network orchestration.

 Final Verdict: Making the Optimal Choice

Your decision between the C9300-48UXM-A and C9300-48T-E ultimately depends on specific requirements and budget constraints:

Choose the C9300-48UXM-A if:

 Your network uses or will implement PoE devices  

 You anticipate significant business growth within 3-5 years  

 You handle high-density traffic or latency-sensitive applications  

 Your budget allows higher initial investment for long-term value  

Choose the C9300-48T-E if:

 PoE functionality is definitely unnecessary  

 Your network size remains stable with moderate traffic needs  

 You require strict control over upfront costs  

 The installation environment is noise-sensitive without dedicated server rooms  

In today's accelerating digital transformation, network infrastructure investments should align with at least 3-5 year development plans. While the C9300-48T-E meets many current business needs, the C9300-48UXM-A delivers additional performance and features that accommodate future growth more flexibly. The ideal choice for your organization strikes the optimal balance between performance, functionality, and budget.