Cisco NXA-PAC-750W-PE
Nexus AC 750W PSU - Port Side Exhaust
Product Highlights
What's Included
Unplanned downtime caused by a power supply failure can cascade across your entire data center fabric. The Cisco NXA-PAC-750W-PE eliminates that risk with a purpose-built, hot-swappable 750W AC power supply module designed for select Cisco Nexus 9000 Series fixed switches.
This PSU delivers up to 750 watts of clean AC power and accepts a wide input voltage range of 90–264 VAC at 47–63 Hz, making it suitable for deployment in data centers worldwide without voltage conversion equipment. Its port-side exhaust (front-to-back) airflow direction — identified by its blue coloring — ensures proper thermal alignment with standard hot-aisle/cold-aisle cooling designs.
Engineered for 1+1 redundant operation, the NXA-PAC-750W-PE allows two power supplies to share the load so that a single PSU failure does not interrupt switch operations. The tool-less, plug-in module form factor means field replacements take seconds, not minutes. Whether you are building a new Nexus 9000 leaf-spine fabric or maintaining an existing deployment, this Cisco-original power supply delivers the reliability and efficiency your network demands.
Features & Benefits
Hot-Swappable Redundant Power
The NXA-PAC-750W-PE supports 1+1 redundancy in compatible Nexus 9000 chassis, meaning one PSU handles the full load while the second stands by for instant failover. Hot-swap capability lets you replace a failed unit during production hours without scheduling a maintenance window or disrupting traffic.
Port-Side Exhaust Airflow
Identified by its blue coloring, this PSU pushes heated air from the port side toward the rear of the rack, matching front-to-back (cold-aisle to hot-aisle) cooling layouts. Consistent airflow direction across all switch components — fans and PSUs — is critical for maintaining safe operating temperatures and maximizing hardware lifespan.
Universal AC Input
With a rated input of 115–240 VAC (range 90–264 VAC) at 50–60 Hz (range 47–63 Hz), this power supply operates on virtually any commercial power grid worldwide. There is no need for step-down transformers or region-specific SKUs, simplifying global procurement and sparing inventory.
Tool-Less Plug-In Module
The NXA-PAC-750W-PE slides directly into the power supply bay of supported Nexus 9000 switches with no tools required. An integrated latch secures the unit in place, and an onboard LED indicator provides at-a-glance health status for rapid diagnostics.
Deployment Scenarios
Data Center Leaf-Spine Fabric
Deploy in Nexus 9300-series leaf or spine switches as part of a VXLAN/EVPN fabric. Redundant 750W PSUs ensure that a single power feed failure does not take a top-of-rack switch offline, protecting east-west traffic flows across the fabric.
ACI Spine and Leaf Infrastructure
Use in Cisco ACI-mode Nexus 9000 switches such as the 9332C to maintain always-on policy enforcement. The hot-swap capability allows PSU replacement without impacting the ACI fabric's control plane or tenant workloads.
Proactive Spare / Inventory Replenishment
Keep one or more NXA-PAC-750W-PE units on the shelf as critical spares. When a PSU fails or triggers an alert, a pre-staged replacement can be installed in seconds, dramatically reducing mean time to repair (MTTR).
General
Electrical
Redundancy & Serviceability
Physical
Compatibility Notes
Compatible Cisco Nexus 9000 Series Switches
The NXA-PAC-750W-PE is documented as a supported power supply option in the following Cisco Nexus platforms (verify your specific model's hardware installation guide for confirmation):
- N9K-C93240YC-FX2 (Nexus 93240YC-FX2)
- N9K-C9332C (Nexus 9332C)
- N9K-C9336C-FX2 (Nexus 9336C-FX2)
- N9K-C9336C-FX2-E (Nexus 9336C-FX2-E)
Important: Always match the airflow direction of the PSU (port-side exhaust / blue) with the installed fan modules. Do not mix exhaust (PE) and intake (PI) components in the same chassis. Do not mix AC and DC power supplies in the same chassis.
Downloads & Resources
Frequently Asked Questions
| Part Number | Product | Key Difference |
|---|---|---|
| NXA-PAC-750W-PI | Nexus AC 750W PSU – Port Side Intake | Same 750W capacity but with port-side intake (back-to-front) airflow — use when your cooling design draws air from the rear of the rack. |
| NXA-PAC-1100W-PE2 | Nexus AC 1100W PSU – Port Side Exhaust | Higher 1100W output for switches with greater power demands; same port-side exhaust airflow direction. |
| NXA-PDC-1100W-PE | Nexus DC 1100W PSU – Port Side Exhaust | 1100W DC-input power supply with matching exhaust airflow — choose this for DC-powered data center environments. |
| NXA-PHV-1100W-PE | Nexus HVAC/HVDC 1100W PSU – Port Side Exhaust | 1100W high-voltage AC/DC power supply with exhaust airflow — designed for high-voltage DC or high-voltage AC power plants. |