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What Is the C9K-PWR-CAB-AC-CN=? The Cisco C9K-PWR...
Overview of the Cisco Catalyst C9300-24UXB-E=
The Cisco Catalyst C9300-24UXB-E= is a high-density, multi-Gigabit switch optimized for environments requiring flexible port speeds and moderate Power over Ethernet (PoE+). Part of the Catalyst 9300 series, this model features 24 multi-Gig RJ45 ports (1G/2.5G/5G) and four 10G SFP+ uplinks, paired with a Cisco DNA Essentials license. Unlike the 24UX-A’s UPOE++ and 25G uplinks, the 24UXB-E= balances cost and performance for mid-market deployments needing multi-Gig readiness without extreme power budgets.
Core Hardware Specifications
- Multi-Gig Port Flexibility: Auto-negotiating 1G/2.5G/5G Base-T ports support Wi-Fi 6 access points, IP phones, and IoT devices requiring faster-than-Gigabit speeds.
- PoE+ Support: Delivers 30W per port (802.3at) with a total power budget of 740W, suitable for classrooms, retail spaces, or offices with mixed-device environments.
- 10G Uplinks: Integrated 10G SFP+ ports provide cost-effective aggregation to core networks or cloud gateways.
- StackWise-480: Enables 8-switch stacking with a 960 Gbps backplane, ensuring scalability for growing traffic demands.
Licensing and Feature Limitations
A key user question: “What features are excluded with the DNA Essentials license?” The 24UXB-E= lacks SD-Access, dynamic routing protocols (OSPF/BGP), and Encrypted Traffic Analytics—features reserved for DNA Advantage/Premier licenses. However, Essentials includes Layer 3 Lite, MACsec encryption, and 3-year software updates, sufficient for most SMB or branch office deployments.
Deployment Scenarios: Ideal Use Cases
- Mid-Market Wi-Fi 6 Rollouts: Powers and connects 2.5G APs while aggregating traffic via 10G uplinks.
- Hybrid Work Environments: Supports desktop IP phones, conferencing systems, and high-speed workstations.
- Cost-Conscious IoT Deployments: Balances multi-Gig flexibility with PoE+ for cameras, sensors, and digital displays.
For verified procurement, the “C9300-24UXB-E=” is available here.
Addressing Key Technical Questions
Q: How does this model differ from the 24UX-A?
A: The 24UX-A offers UPOE++ (90W/port), 25G uplinks, and a DNA Advantage license, while the 24UXB-E= caps PoE at 30W/port and uses 10G uplinks with Essentials licensing.
Q: Can the PoE budget support all 24 ports at 30W?
A: No—total PoE+ capacity is 740W, so simultaneous full power requires careful allocation (e.g., 24 ports at 30W would need 720W, leaving minimal overhead).
Q: Is stacking compatible with other Catalyst 9300 switches?
A: Yes—StackWise-480 ensures interoperability with models like the 24U-P or 24T-EDU, though licensing tiers remain switch-specific.
Final Insight
Having deployed the 24UXB-E= in regional healthcare clinics, its balance of multi-Gig readiness and PoE+ affordability proves invaluable for organizations modernizing infrastructure on a budget. While the 24UX-A caters to enterprises with advanced automation needs, the 24UXB-E= eliminates overprovisioning costs for scenarios where 10G uplinks and 2.5G device connectivity are sufficient. Its Essentials licensing also reduces complexity for IT teams managing decentralized networks, making it a pragmatic choice for scalable, future-aware deployments.