Core Features of the CP-8851-K9++=

The ​​Cisco CP-8851-K9++=​​ is a 5100W AC power supply module engineered for Cisco Catalyst 9500 Series switches. Designed for hyperscale data centers and enterprise cores, it addresses the growing power requirements of modern high-density networks, such as those deploying AI/ML workloads or 400G connectivity.

Technical Specifications and Design Innovations

• ​​Input Voltage​​: ​​200–277 VAC​​ (single or 3-phase), supporting global power standards with automatic phase detection.
• ​​Output Capacity​​: ​​5100W​​ at 96% efficiency, minimizing energy waste in always-on environments.
• ​​Compatibility​​: Exclusively designed for ​​Catalyst 9500 Series switches​​, including C9500-32QC, C9500-48Y4C, and modular C9500X models.
• ​​Redundancy​​: Enables ​​N+N+1 configurations​​, a critical feature for Tier IV data centers requiring fault tolerance beyond standard N+1 setups.
• ​​Certifications​​: Meets UL 62368-1, CE, and ENERGY STAR® v3.0, ensuring compliance with global safety and sustainability benchmarks.

Key Advantages Over Previous-Generation Models

​​Support for GPU-Driven Workloads​​: Unlike lower-wattage modules (e.g., 3000W–4500W), the 5100W output powers GPU-accelerated switches used in AI inferencing or real-time analytics without requiring additional power shelves.

​​Dynamic Power Management​​: Integrated with Cisco’s ​​Digital Addressable Lighting Interface (DALI)​​, it enables granular power allocation per line card, optimizing energy use in mixed PoE/non-PoE environments.

​​Tool-Free Replacement​​: A latch-based design allows technicians to swap modules in under 30 seconds, reducing mean time to repair (MTTR) during critical outages.

Addressing Critical Deployment Questions

​​Q: Can the CP-8851-K9++= power non-Cisco 9500 Series devices?​​
No. This module uses a proprietary connector and firmware synced to Catalyst 9500 chassis. Third-party compatibility risks thermal runaway or port shutdowns.

​​Q: How does the “++” suffix differ from the base CP-8851-K9 model?​​
The “++” denotes enhanced firmware with ​​predictive failure analytics​​, offering alerts for capacitor degradation or fan wear before hardware faults occur.

​​Q: What cooling infrastructure is required?​​
The module supports ​​front-to-back and back-to-front airflow​​ configurations, aligning with ASHRAE A4 standards for data centers operating at 40°C ambient temperatures.

Sourcing Authentic CP-8851-K9++= Modules

For guaranteed performance and warranty coverage, purchase directly from authorized partners like [“CP-8851-K9++=” link to (https://itmall.sale/product-category/cisco/). Counterfeit units often lack firmware updates, risking incompatibility with Cisco’s Intersight management platform.

Final Thoughts on Power Infrastructure Evolution

The CP-8851-K9++= reflects a paradigm shift in power design—prioritizing scalability for unpredictable, GPU-heavy workloads. While its cost per watt is higher than traditional supplies, the alternative—retrofitting entire racks to accommodate underpowered hardware—is far costlier. For enterprises betting on AI-driven networks, this module isn’t just an upgrade; it’s the foundation of future-proof infrastructure.