A9903-8HG-PEC-FC=: Is It the Right Fit for Sm
What Is the A9903-8HG-PEC-FC=? The A9...
Technical Overview of the CN3K-PAC-400W=
The CN3K-PAC-400W= is a 400W AC power supply unit designed for select Cisco Nexus 3000 Series switches, such as the Nexus 3164Q and 31108TC models. This hot-swappable power supply enables redundancy configurations by supporting dual power modules, ensuring uninterrupted network operations. Its front-to-back airflow design aligns with standard data center rack cooling practices, while a universal input voltage range (90–240 VAC) ensures global compatibility.
Key Features and Compatibility
Dual-mode efficiency: The CN3K-PAC-400W= adjusts power output dynamically based on real-time switch load requirements, reducing energy waste by up to 25% compared to fixed-output counterparts.
Plug-and-play installation: Backward compatibility with older Nexus 3K chassis eliminates the need for firmware upgrades in most deployments.
Addressing Common Deployment Questions
Q: Is the CN3K-PAC-400W= backward-compatible with non-3000 Series switches?
A: No – this PSU is exclusively validated for Nexus 3064-X, 3164Q, and similar 3K platforms. Mixing it with non-3K hardware risks power instability.
Q: Can it support PoE+ devices?
A: The 400W unit primarily powers the switch chassis. For switches requiring high PoE budgets (e.g., Nexus 31108PC-V), pair it with dedicated PoE modules.
Performance Comparisons and Use Cases
| Scenario | Recommended Configuration |
|---|---|
| High-density data centers | Dual PSUs + NX-OS power redundancy mode |
| Edge deployments | Single PSU with ECO-mode enabled |
For organizations prioritizing scalability, choosing the CN3K-PAC-400W= over lower-wattage options future-proofs deployments as network loads increase.
Where to Source Authentic Units
To avoid counterfeit components, purchase the CN3K-PAC-400W= exclusively through authorized channels like itmall.sale’s Cisco product category, which provides full warranty coverage and verified compatibility testing.
Final Thoughts
While newer Cisco Catalyst switches dominate headlines, the CN3K-PAC-400W= remains a cost-effective workhorse for teams running legacy Nexus 3K infrastructure. Its blend of adaptive efficiency and straightforward maintenance makes it a practical choice for enterprises balancing performance with budgetary constraints – provided the hardware ecosystem remains unchanged.