Dell 350W Redundant Power Supply Unit for PowerEdge R320/R420 - 9WR03

For data centers and businesses where downtime is not an option, this Dell 350W redundant power supply delivers the reliability and seamless failover that standard single PSUs cannot match. Engineered for PowerEdge R320 and R420 servers, the 9WR03 module ensures continuous operation even if one power supply fails, protecting critical workloads and simplifying maintenance.

Highlights

• 350W output capacity for efficient power delivery to server components
• Redundant design supports hot-swap replacement without system shutdown
• Genuine Dell part (9WR03) guarantees compatibility and quality
• Optimized for Dell PowerEdge R320 and R420 rack servers
• Energy-efficient operation reduces power consumption and cooling costs

In daily use

Installed in a 1U or 2U server, this PSU runs quietly and efficiently, automatically sharing the load with a second unit when present. In the event of a failure, the redundant architecture instantly shifts the full load to the remaining unit, allowing IT staff to replace the faulty module at their convenience without interrupting services. The hot-swap capability means no tools are required—simply slide out the old unit and insert the new one, even while the server is running.

Full specifications

• Brand: Dell
• Model: 9WR03
• MPN: 9WR03
• EAN: 5706998854599
• Power output: 350W
• Type: Redundant power supply unit
• Compatibility: Dell PowerEdge R320, R420
• Form factor: Hot-swappable module
• Input voltage: 100-240V AC (auto-ranging)
• Frequency: 50/60 Hz
• Efficiency: 80 PLUS certified (typical)
• Cooling: Integrated fan
• Connectors: Proprietary Dell server power connector

Final note

Keep your critical infrastructure running with this genuine Dell redundant PSU—a straightforward upgrade for high-availability environments.