550W Hot-Plug Server Power Supply for Dell PowerEdge R330 R430 R340 R440 R3930, Replacement for CN-0NCNFF NCNFF L550E-S1 PS-2551-3D1 1Pack

Aomoproing 550W Hot-Plug Server Power Supply is a high-quality direct replacement for Dell OEM part numbers CN-0NCNFF, 0NCNFF, NCNFF, L550E-S1, D550E-S1, and PS-2551-3D1. It is precision-engineered to be fully compatible with Dell PowerEdge R330, R430, R340, R440, and R3930 1U rack-mount servers, making it the perfect solution for server repair, upgrade, or redundancy expansion.

It delivers a robust 550-watt power output with a universal 100-240V AC input (50/60Hz) and active Power Factor Correction (PFC), ensuring stable performance across global power grids. Boasting an industry-leading 94% efficiency with 80 Plus Platinum certification, this unit drastically reduces energy consumption and heat generation, lowering operational costs and ensuring cooler, quieter operation in dense data center environments.

Designed for mission-critical systems, this power supply features true hot-plug capability, allowing for installation or replacement without powering down the server, ensuring maximum uptime and business continuity. It fits perfectly into the standard 1U server chassis with the identical connector layout and physical dimensions as the original Dell PSU, guaranteeing 100% plug-and-play installation with no modifications required.

Constructed with industrial-grade components, this unit includes comprehensive multi-level safety protections: Over-Voltage (OVP), Over-Current (OCP), Short-Circuit (SCP), and Over-Temperature (OTP). Every unit undergoes rigorous full-load burn-in testing and quality inspection to meet OEM standards for dependable, long-lasting performance in 24/7 enterprise environments. This 1-pack power supply is the ideal choice for IT professionals seeking a cost-effective, high-quality replacement for their Dell PowerEdge server infrastructure.