CISCO NXA-PAC-1100W-B Nexus Port Intake Airflow Platinum 027501119277 Power Supply

( Brand: Cisco ), ( Part Type: Supply ), ( Maximum Output Power: 1100 W ), ( Country Of Origin: China ), ( UPC: 027501119277 )

Review CISCO Nexus 1100w Port Side Intake Airflow Platinum Power Supply

The **Cisco Nexus 1100W Port Intake Airflow Platinum Power Supply (Part Number: 027501119277, Model: NXA-PAC-1100W-B)** is a high-performance, enterprise-grade power supply designed exclusively for Cisco Nexus 1100 Series Fabric Extenders (FEX), ensuring seamless and reliable connectivity in modern data center environments. Engineered with Cisco s signature precision and scalability in mind, this power supply delivers a robust 1100-watt output, providing the sustained energy required to support high-density, low-latency network operations without compromising efficiency or uptime. Its **Platinum-tier efficiency rating** typically exceeding 90% minimizes wasted energy, reducing operational costs and environmental impact while maintaining optimal thermal performance. The unit features a **port intake airflow design**, which strategically directs cooling air into the power supply, enhancing heat dissipation and preventing overheating in high-rack-density deployments. This thoughtful engineering ensures that the Nexus 1100W FEX operates at peak performance even under heavy workloads, making it ideal for mission-critical applications such as virtualization, cloud computing, and high-speed data transmission.

Beyond its technical prowess, the NXA-PAC-1100W-B is built to the highest standards of reliability and redundancy, offering enterprise-grade durability for extended operational lifecycles. Its **hot-swappable** design allows for seamless maintenance without disrupting network services, a critical feature in environments where downtime is unacceptable. The power supply is fully compatible with Cisco s Nexus 1100 Series FEX platforms, ensuring seamless integration with existing infrastructure while supporting advanced features like **Unified Fabric** and **FabricPath**, which enhance network flexibility and scalability. Additionally, its compact yet robust form factor ensures easy installation within standard 1U rack-mounted enclosures, making it a space-efficient solution for data centers of all sizes. Whether deployed in a traditional IT environment or a cutting-edge hyperscale facility, this power supply exemplifies Cisco s commitment to delivering **high-performance, energy-efficient, and future-proof networking solutions** that adapt to the evolving demands of modern IT architectures.

### **Pros and Cons of buying a Cisco Nexus 1100W Platinum Power Supply (Part Number: 027501119277, NXA-PAC-1100W-B)**

1. **High Reliability and Redundancy Support**

The Nexus 1100W series is designed for enterprise-grade deployments, supporting hot-swappable power supplies. The Platinum model ensures high availability, which is critical for data centers where downtime is unacceptable. This power supply can be paired with another identical unit for full redundancy, minimizing the risk of a single point of failure.

2. **Efficient Power Consumption**

The Nexus 1100W series is built with energy efficiency in mind. The Platinum power supply is likely to incorporate advanced power management features, such as intelligent voltage regulation and reduced idle power consumption, which can lower operational costs and reduce heat generation.

3. **Compatibility with Nexus 1000V and 9000 Series**

This power supply is designed specifically for the Nexus 1000V (virtualized) and Nexus 9000 (physical) platforms, ensuring seamless integration with Cisco s unified fabric architecture. It supports both physical and virtualized environments, making it versatile for modern data center deployments.

4. **Platinum-Level Performance and Cooling**

The "Platinum" designation suggests enhanced cooling capabilities, likely with optimized airflow and heat dissipation. This helps maintain optimal operating temperatures, reducing the risk of thermal throttling or component failure, especially in high-density environments.

5. **Long-Term Availability and Support**

Cisco s Nexus 1100W series has been in production for several years, meaning this power supply is likely to remain available through Cisco s support lifecycle. This reduces the risk of obsolescence compared to newer, less-proven components.

6. **Modular and Scalable Design**

The Nexus 1100W supports multiple power supplies, allowing for easy scaling as infrastructure demands grow. This modularity ensures that you can upgrade or replace components without overhauling the entire system.

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1. **High Cost**

Cisco s enterprise-grade components, especially those with redundancy and high reliability features, come at a premium. The Nexus 1100W Platinum power supply is likely more expensive than standard or basic power supplies from other vendors or even Cisco s lower-tier models. This can be a significant upfront investment, particularly for smaller organizations or startups.

2. **Potential Overkill for Smaller Deployments**

If your data center does not require full redundancy or high-density power consumption, investing in a Platinum power supply may be unnecessary. A standard or basic power supply could suffice, reducing costs without sacrificing performance for less demanding environments.

3. **Vendor Lock-In**

Cisco s ecosystem, while robust, can create vendor lock-in. Replacing or upgrading Cisco components later may require additional licensing, training, or compatibility checks, especially if you eventually move to non-Cisco hardware. This can complicate future IT strategy and increase long-term costs.

4. **Limited Lifespan Compared to Consumer-Grade Components**

While Cisco components are built for durability, they may not last as long as some high-end consumer or enterprise-grade power supplies from other vendors (e.g., APC, UPS systems). However, this is less of an issue for Cisco s Platinum-grade parts, which are designed for extended operational lifecycles.

5. **Complexity in Maintenance and Troubleshooting**

Cisco s Nexus series requires specialized knowledge for configuration, monitoring, and troubleshooting. If your team lacks expertise in Cisco s unified fabric or Nexus platforms, managing this power supply (or the entire switch) may require additional training or external support, adding to operational overhead.

6. **Potential for Obsolescence**

While the Nexus 1100W series is not yet obsolete, Cisco frequently updates its product line with newer models (e.g., Nexus 9000 Series with newer ASICs). Future upgrades may require replacing the entire chassis or power supplies, which could become costly if the current model is phased out.

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The **Cisco Nexus 1100W Platinum Power Supply (NXA-PAC-1100W-B)** is an excellent choice for **enterprise data centers** that prioritize **high availability, redundancy, and long-term reliability**. Its efficiency, compatibility with Cisco s unified fabric, and support for hot-swappable redundancy make it ideal for mission-critical environments where uptime is non-negotiable. However, the **high cost, potential over-provisioning for smaller deployments, and vendor lock-in risks** must be carefully considered.

For organizations with **limited budgets or non-critical infrastructure**, a standard power supply or a third-party alternative might be more cost-effective. Conversely, for **large-scale data centers, cloud providers, or enterprises running Cisco Nexus switches**, this power supply is a **strong, future-proof investment** that aligns with Cisco s enterprise-grade reliability standards.

---

- You are deploying **Cisco Nexus 1000V or 9000 Series switches** in a **high-availability environment** (e.g., financial services, healthcare, or large-scale cloud infrastructure).

- You require **hot-swappable redundancy** and do not want to compromise on reliability.

- Your data center operates at **high power densities** and needs efficient cooling and energy management.

- You have **existing Cisco infrastructure** and want to maintain compatibility and supportability.

- Your deployment is **small-scale or non-critical**, and a standard power supply would suffice.

- Budget constraints make the **premium cost** of the Platinum model prohibitive.

- You plan to **diversify away from Cisco** in the future, as this could lead to unnecessary vendor lock-in.

- You lack **Cisco-certified personnel** to manage and troubleshoot the system effectively.

- If redundancy is not critical, opt for a **standard Nexus 1100W power supply** (e.g., NXA-PAC-1100W-A) to reduce costs.

- For third-party options, evaluate **high-efficiency, hot-swappable power supplies** from vendors like **APC, Liebert, or Delta Electronics**, ensuring they meet Cisco s compatibility requirements.

- If scaling is a concern, assess whether **Cisco s newer Nexus 9000 Series** (with newer ASICs) might be a better long-term investment, even if it requires a full chassis upgrade.

Ultimately, this power supply is **best suited for high-end, mission-critical deployments** where reliability outweighs cost considerations. For other use cases, a more balanced approach may be advisable.

Details:

Pulled from working environment. 37758 Port Side Intake Airflow. Platinum Power Supply. NXA-PAC-1100W-B.

Ready for installation. # of Fans: No accessories.

part #: 027501119277 prices

• $43.78-$419.46

specifications serverpowe:

• brand: Cisco
• part type: Supply
• maximum output power: 1100 W
• country of origin: China
• upc: 027501119277

payments serverpowe:

• other
• credit card: Diners-club
• wallet: Paypal

seller serverpowe:

• rating: 99.4%
• city: Burnsville, Minnesota
• # reviews: 1067

general serverpowe:

• condition: Used
• Enterprise Networking, Servers > Server Components > Server Power Supplies

returns serverpowe:

• policy: Returns Accepted
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• time: 60 Days
• method: Money back

shipping serverpowe:

• transit: 2-4 Days
• service: UPS Ground, USPS Priority Mail, UPS Next Day Air
• class: Standard, Expedited, One-day
• carrier: UPS, USPS
• type: Calculated
• cost: $0.00

offer serverpowe:

• started: April 7, 2026
• availability: In Stock
• quantity: 2
• best offers: True
• options: Ship-to-home
• sold: 0

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