550W 80 Plus Platinum Server Power Supply for Dell PowerEdge R330 R340 R430 R440 R3930, Replacement for CN-0NCNFF 0NCNFF NCNFF L550E-S1 PS-2551-3D1

Aomoproing 550W server power supply is a high-quality direct replacement for Dell OEM units, engineered specifically for PowerEdge R330, R340, R430, R440, and R3930 rack servers. It matches the original specifications, connectors, and physical dimensions to ensure seamless integration and zero compatibility issues.

Featuring 80 Plus Platinum certification, this PSU delivers up to 94% energy conversion efficiency, significantly reducing power consumption and heat outputcritical for data center cooling and energy cost savings. It supports hot-swappable installation, allowing replacement without shutting down the server, ensuring maximum uptime for mission-critical applications.

The unit operates on a universal 100-240V AC input with active PFC, making it suitable for global data center environments. It comes equipped with comprehensive safety protections (over-voltage, over-current, short-circuit, and over-temperature) to safeguard your server hardware from power anomalies.

Ideal for server maintenance, upgrades, or building redundant power configurations, this power supply provides stable, reliable power performance to support processors, memory, hard drives, and expansion cards in Dell 1U/2U server systems.