Cisco Nexus 2200 AC Power supply Std airflow

Cisco N2200-PAC-400W – 400W AC Power Supply with Standard Airflow (Port-Side Exhaust) for Nexus 2200 Fabric Extenders

The Cisco N2200-PAC-400W is a genuine, high-efficiency 400-watt AC power supply engineered specifically for the Cisco Nexus 2200 Series Fabric Extenders (FEX), including models like the N2K-C2248TP-E, N2K-C2232PP, and other variants in the 2200 family. Designed with standard airflow orientation—port-side exhaust (PE)—this power supply ensures optimal thermal performance while delivering reliable, redundant power to support always-on network operations in enterprise and data center environments.

As a critical component of the Nexus 2200’s modular architecture, the N2200-PAC-400W not only provides stable electrical power but also contributes to the system’s overall cooling strategy, making it essential for maintaining uptime, performance, and hardware longevity.

Key Features & Specifications

• Model: N2200-PAC-400W
• Power Output: 400W AC
• Input Voltage: 100–240V AC (auto-ranging, 50/60 Hz)
• Airflow Direction: Port-side exhaust (PE) – standard airflow
• Compatibility: Cisco Nexus 2200 Series Fabric Extenders (e.g., N2K-C2248TP-E, N2K-C2232PP)
• Redundancy Support: Hot-swappable; supports 1+1 or 1+0 power configurations
• Efficiency: High-efficiency design compliant with 80 PLUS® standards
• Hot-Swappable: Yes – enables replacement without interrupting network traffic
• Cisco Certified: Fully tested and validated for thermal, electrical, and mechanical integration

Note: “Port-side exhaust” means the power supply draws cool air from the rear (power side) and exhausts hot air out the front (port side). Always ensure all system components (fans, power supplies) use matching airflow to prevent overheating.

Role in Nexus 2200 Architecture

The Nexus 2200 Series serves as a top-of-rack (ToR) fabric extender, connecting directly to a parent Nexus 5000 or 7000 switch. Despite its compact 1U form factor, it supports up to 48 x 1/10GBASE-T or SFP+ ports, which can generate significant heat under full load.

The N2200-PAC-400W plays a dual role:

1. Power Delivery: Supplies stable, filtered AC power to the chassis and connected line cards.
2. Thermal Management: Its integrated fan contributes to the chassis-wide airflow path, working in tandem with the system fan tray to maintain safe internal temperatures.

In a typical deployment, two N2200-PAC-400W units are installed for 1+1 redundancy, ensuring continuous operation even if one power supply fails or is removed for maintenance.

Why Airflow Direction Matters: Port-Side Exhaust (PE)

Cisco uses clear airflow labeling to ensure compatibility with data center cooling designs:

• PE (Port-side Exhaust): Air flows from rear to front—ideal for racks where the rear faces the cold aisle.
• PI (Port-side Intake): Air flows from front to rear—standard in most cold-aisle-contained deployments.

The N2200-PAC-400W is a PE (exhaust) model. Installing it in a system expecting PI airflow can cause:

• Hot air recirculation
• Thermal throttling or shutdowns
• Cisco NX-OS environmental alarms
• Voided warranty or support eligibility

Always verify your chassis’s required airflow before ordering.

Reliability & Operational Benefits

• Hot-Swappable Design: Replace failed units without powering down the FEX—critical for zero-downtime environments.
• Universal Input: Supports global AC voltages (100–240V), simplifying deployment across regions.
• Intelligent Monitoring: Power status, temperature, and fan speed are visible via NX-OS (show environment power) and Cisco DCNM.
• Energy Efficient: Reduces operational costs and aligns with green IT initiatives.

When to Use the N2200-PAC-400W

This power supply is ideal for:

• New Nexus 2200 deployments requiring standard PE airflow
• Replacing failed or aging power supplies in existing FEX units
• Maintaining spare inventory for rapid recovery
• Ensuring Cisco TAC support compliance (genuine parts required)

⚠️ Warning: Third-party or mismatched power supplies may lack proper firmware integration, thermal calibration, or safety certifications—posing risks to system stability and personnel safety.

Technical Summary

Best Practices

1. Match Airflow Consistently: All power supplies and fans in the chassis must use the same airflow direction (PE or PI).
2. Deploy in Pairs: Use two N2200-PAC-400W units for redundancy in production environments.
3. Monitor Power Health: Regularly check show environment power for warnings or degraded units.
4. Use Genuine Cisco Parts: Only Cisco-original power supplies guarantee full compatibility and support.

Conclusion

The Cisco N2200-PAC-400W is a mission-critical component that ensures your Nexus 2200 Fabric Extender operates reliably, efficiently, and safely. With its 400W capacity, port-side exhaust airflow, and hot-swappable design, it delivers the power and thermal management needed for high-density top-of-rack deployments. For IT teams managing scalable, resilient data center networks, this genuine Cisco power supply is the trusted choice for performance and peace of mind.

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