Name: 331-7131 Dell 550-Watt Redundant Power Supply for PowerEdge R420/R620/R720/R720XD
Brand: Dell
SKU: 331-7131
Price: 138.29 USD
Availability: InStock
Rating: 4.8 (119 reviews)

Product Overview
The Dell 550-Watts Redundant Power Supply fits into PowerEdge R420, R620, R720, and R720XD servers to maintain reliable and uninterrupted power delivery. It allows servers to continue running even if one power source fails, making it essential for environments where continuous operation is a priority.

General Information
Brand	Dell
Part Number	331-7131
Product Type	Server Power Supply
Condition	Refurbished

Technical Information
Input Voltage	AC 100-240V
Input Frequency	50/60 Hz
Output	12V DC
Max. Output Power	550W
Hot Swappable	Yes
Redundant Support	Yes
Cooling Type	Active Fan
Modularity	Non-Modular
rail_design	Single 12V Rail
Number of Fans	1

Compatibility
Form Factor	Proprietary
Compatible For	PowerEdge R420,PowerEdge R620,PowerEdge R720,PowerEdge R720XD

Physical Characteristics
Weight	5.00

Certifications and Environmental
Compliance Standards	WEEE, RoHS

Product Description
This 550-watt redundant power supply is built to provide reliable power to Dell PowerEdge servers including models R420, R620, R720, and R720XD. It's often found in data centers and enterprise environments where uptime is crucial. The unit is designed to be hot-swappable, allowing IT staff to replace or upgrade power supplies without interrupting server operation. Key Features Ensures continuous power with built-in redundancy to prevent downtime Delivers consistent 550 watts to meet server demands Compatible with multiple PowerEdge models for flexible deployment Hot-swappable for maintenance without shutting down systems Supports efficient energy use aligning with server power needs This power supply is typically deployed in rack-mounted server setups where business-critical applications run. It plays an important role in keeping systems operational by providing stable, redundant power, which helps prevent unexpected outages and supports smooth IT operations.

Use Cases
The Dell 550-Watt Redundant Power Supply is primarily deployed in enterprise data centers and virtualization environments where uninterrupted power is critical. IT administrators and infrastructure managers rely on this power supply to ensure continuous operation of PowerEdge servers under high-demand workloads. How It's Used: Supporting high-density rack deployments in enterprise data centers requiring fault-tolerant power configurations. Maintaining redundancy in virtualization clusters handling resource-intensive applications and multiple virtual machines. Providing reliable power in remote office setups where server downtime could disrupt business operations. Ensuring power continuity for storage clusters during maintenance or unexpected power source failures. Enabling edge computing nodes to operate seamlessly in environments with limited IT presence and support. This power supply enhances operational resilience by minimizing service interruptions and supports scalable server infrastructure in demanding IT environments. Its hot-swappable design allows for efficient maintenance without impacting server performance or availability.