The Cisco C9400-LC-48H++= is a high-performance line card designed for the Catalyst 9400 Series chassis, targeting environments demanding massive Power over Ethernet (PoE) scalability. Drawing from ​​Cisco.com​​ specifications and ​​ITMall.Sale​​ procurement insights, this article explores its technical value and deployment practicality.

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​​Core Specifications​​

The C9400-LC-48H++= is engineered for high-density, power-intensive networks:

• ​​48x Multi-Gigabit Ethernet Ports​​: Supports 1/2.5/5/10Gbps speeds, with auto-sensing for mixed-device environments.
• ​​PoE++ (90W per Port)​​: Delivers up to 4.32kW total power budget, ideal for IoT, Wi-Fi 6/6E access points, and advanced endpoints.
• ​​Cisco UADP ASIC​​: Enables line-rate throughput with ​​MACsec encryption​​ and QoS prioritization.
• ​​StackWise-1T Compatibility​​: Scales across Catalyst 9400 chassis for unified management.

​​Technical Advantages Over Competing Line Cards​​

​​1. Power Efficiency at Scale​​
Unlike lower-tier PoE line cards, the 48H++= uses ​​Cisco’s Dynamic Power Management​​ to allocate power per device needs, reducing waste by up to 25%.

​​2. Future-Ready Density​​

• ​​Modular Uplinks​​: Supports 40/100G QSFP28 modules for spine-leaf architectures.
• ​​Cisco DNA Integration​​: Automates device onboarding and policy enforcement via DNA Center.

​​3. Resilient Design​​

• ​​Hot-Swappable​​: Minimizes downtime during replacements or upgrades.
• ​​Front-to-Back Airflow​​: Optimizes thermal performance in standard data center racks.

​​Ideal Deployment Scenarios​​

​​Smart Campus Networks​​: Powers and connects thousands of IoT devices (e.g., security cameras, digital signage, environmental sensors).
​​High-Density Wi-Fi 6/6E Deployments​​: Supports bandwidth-heavy wireless backhaul with consistent 90W per AP.
​​Healthcare or Industrial IoT​​: Secures and prioritizes critical connected equipment (e.g., patient monitors, robotics).

​​Purchasing and ROI Considerations​​

For enterprises balancing cost and performance, the ​​[“C9400-LC-48H++=” is available here (https://itmall.sale/product-category/cisco/)​​, offering:

• ​​Refurbished Units​​: Cisco-certified options with 90-day warranties, cutting costs by 30–40% versus new.
• ​​Power Supply Bundles​​: Pair with C9400-PWR-4KW-AC/DC for optimized power distribution.
• ​​Scalability​​: Start with one line card and expand as PoE demands grow.

​​Addressing Critical User Questions​​

​​Q: Is it compatible with older Catalyst 9400 chassis (e.g., C9407R)?​​
Yes, but ensure the chassis runs ​​IOS XE 17.6.1 or later​​ for full feature support.

​​Q: What’s the real-world power draw per port?​​
At full 90W load, expect ~4.3kW total. However, Dynamic Power Management typically reduces this by 15–20% in mixed-device setups.

​​Q: How does it handle network congestion?​​
​​Cisco’s Hierarchical QoS (HQoS)​​ prioritizes traffic from mission-critical devices (e.g., VoIP phones, medical gear) during peak loads.

Final Insight

The C9400-LC-48H++= isn’t just about power—it’s about precision. While Cisco.com touts its technical specs, ITMall.Sale’s refurbished options make it viable for mid-market firms tackling IoT sprawl. In an era where every watt and port counts, this line card exemplifies how scalability and efficiency can coexist, even in the most demanding networks.