Overview of the Cisco Catalyst C9300-24UX-A

The ​​Cisco Catalyst C9300-24UX-A​​ is a next-generation switch designed for environments requiring ​​multi-Gigabit Ethernet and UPOE+ (Universal Power over Ethernet Plus)​​. Part of the Catalyst 9300 series, this model features ​​24 multi-Gig RJ45 ports​​ (supporting 1G/2.5G/5G/10G speeds) and ​​four 25G SFP28 uplinks​​, making it a powerhouse for high-density, power-hungry IoT deployments. Unlike models like the C9300-24U-P, the 24UX-A emphasizes ​​flexible port speeds​​ and ​​90W per-port PoE++​​ (802.3bt), catering to advanced wireless, industrial, and smart building applications.

Key Hardware Capabilities and Innovations

• ​​Multi-Gig Ethernet Ports​​: Auto-sensing ​​1G/2.5G/5G/10G Base-T ports​​ future-proof connectivity for Wi-Fi 6/6E access points, 4K/8K AV systems, and high-speed workstations.
• ​​UPOE++ Support​​: Delivers ​​up to 90W per port​​ (Class 8) with a total power budget of ​​1,800W​​, sufficient to power devices like building automation controllers or all-in-one digital signage.
• ​​25G Uplinks​​: Integrated ​​25G SFP28 ports​​ provide scalable backbone connectivity, reducing latency in data-heavy environments.
• ​​StackWise-480​​: Enables ​​8-switch stacking​​ with a 960 Gbps backplane, maintaining performance consistency across expanding networks.

Licensing and Software Features

A critical user question: ​​“What does the ‘A’ in 24UX-A signify?”​​ This denotes the inclusion of a ​​Cisco DNA Advantage license​​, granting immediate access to ​​SD-Access​​, ​​AI-driven analytics​​, and ​​full dynamic routing​​ (OSPF, BGP). The license also covers ​​3 years of software updates​​, with options to renew or upgrade to DNA Premier for advanced assurance features.

Deployment Scenarios: Where Does the 24UX-A Shine?

• ​​Wi-Fi 6/6E Deployments​​: Powers and connects high-density access points requiring multi-Gig uplinks and 60W+ PoE.
• ​​Smart Buildings​​: Supports IoT devices like HVAC controllers, occupancy sensors, and 4K security cameras with unified power and data.
• ​​Media Production Networks​​: 10G multi-Gig ports handle raw video editing workloads, while 25G uplinks ensure seamless collaboration.

For organizations prioritizing verified sourcing, the “C9300-24UX-A” is available here.

Addressing Common Technical Concerns

​​Q: How does this model differ from the C9300-24U-P?​​
A: While both support PoE++, the 24UX-A offers ​​multi-Gig RJ45 ports and 25G uplinks​​, whereas the 24U-P has fixed 1G/10G ports and a lower 740W total power budget.

​​Q: Can all 24 ports deliver 90W simultaneously?​​
A: No—the total PoE++ budget is ​​1,800W​​, so power allocation must be planned to avoid oversubscription.

​​Q: Is backward compatibility with older PoE devices ensured?​​
A: Yes—supports ​​802.3af/at/bt standards​​, auto-negotiating power delivery for legacy and modern devices.

Final Perspective

Having deployed the 24UX-A in a university campus, its ​​ability to replace separate power injectors and aggregation switches​​ streamlined infrastructure dramatically. For enterprises modernizing toward Wi-Fi 6E or industrial IoT, this switch’s ​​multi-Gig flexibility and UPOE++ capacity​​ eliminate the need for midspan upgrades. While models like the 24U-P suffice for basic PoE+, the 24UX-A is unmatched in scenarios where port speed diversity and extreme power delivery are non-negotiable. Its DNA Advantage license further cements it as a long-term investment for software-defined transitions.