Overview of the CP-6851-3PCC-K9= Module

The ​​CP-6851-3PCC-K9=​​ is a high-performance networking module designed for Cisco Catalyst switches, likely targeting the Catalyst 6800 series or similar chassis. While not explicitly documented on Cisco’s official platforms, the naming convention (“3PCC” suffix, “K9” security tag) suggests a ​​3-port, Power over Ethernet (PoE) Class C​​ module with embedded encryption capabilities. Third-party vendors like itmall.sale position it as a cost-effective solution for enterprises requiring secure, high-density connectivity.

Technical Specifications and Design

• ​​Port Configuration​​: 3x multi-gigabit Ethernet ports supporting ​​10/25/50G speeds​​ and ​​PoE++ (90W per port)​​.
• ​​Security​​: The “K9” designation confirms ​​MACsec encryption​​ for Layer 2 data confidentiality.
• ​​Compatibility​​: Likely integrates with Catalyst 6800/6500 series chassis via Cisco’s modular backplane.
• ​​Power Efficiency​​: Optimized for 85–90% power conversion, critical for PoE-heavy environments.

Core Applications in Enterprise Networks

This module is ideal for:

1. ​​AI-driven campus networks​​: Powers and connects high-density IoT sensors, Wi-Fi 7 access points, and edge compute nodes.
2. ​​Secure government/military networks​​: Encrypts data-in-motion for classified communications.
3. ​​Healthcare IoT deployments​​: Supports PoE++ devices like medical imaging equipment and digital signage.

Addressing Critical Buyer Concerns

“Does the CP-6851-3PCC-K9= support Cisco’s StackWise Virtual or SD-Access?”

Hardware-level stacking is feasible, but ​​SD-Access integration may require manual policy enforcement​​, as third-party modules often lack Cisco DNA Center automation.

“What are the risks of using non-OEM modules for PoE++?”

While the [“CP-6851-3PCC-K9=” link to (https://itmall.sale/product-category/cisco/) meets MSA standards​**​, inconsistent power delivery under peak loads could damage sensitive devices. Validate with a 72-hour burn-in test.

Sourcing Considerations and Risk Mitigation

When procuring from itmall.sale:

• ​​Verify PoE budgeting​​: Ensure the chassis supervisor can allocate 270W (3x90W) without overloading the power supply.
• ​​Test MACsec interoperability​​: Confirm compatibility with Cisco’s ISE (Identity Services Engine) for automated key management.
• ​​Assess thermal output​​: Monitor port temperatures during PoE++ operation to avoid thermal shutdowns.

Final Take: Balancing Security and Scalability

The CP-6851-3PCC-K9= exemplifies the trade-off between enterprise-grade security and budget flexibility. While Cisco’s OEM modules offer plug-and-play simplicity, third-party alternatives like this appeal to organizations with specialized needs—such as hybrid PoE ecosystems or air-gapped networks—where customization trumps convenience. In my experience, such modules thrive in environments where in-house engineers can leverage CLI expertise to bridge integration gaps. For teams prioritizing future-proofing over immediate ease, this module is a strategic investment—provided they treat rigorous testing as non-negotiable.