Dell 550W alimentatore ridondante hot-swap per server (NCNFF) - 80 PLUS Platinum

Data center technicians and IT administrators rely on the Dell NCNFF power supply to keep critical servers running without interruption. This 550W hot-swap redundant PSU is built for Dell PowerEdge R540, R640, R740, R740xd, R840, R940, C6420, T440, and T640 systems, allowing you to replace a failed unit without shutting down the server.

Key specifications

• Power output: 550 W
• Efficiency: 80 PLUS Platinum
• Form factor: Hot-swap, redundant
• Input voltage: 100-240 V AC
• Input frequency: 50/60 Hz
• Cooling: Active fan
• Compatibility: Dell PowerEdge R540, R640, R740, R740xd, R840, R940, C6420, T440, T640
• Dell Part Number: NCNFF

Why choose it

With 80 PLUS Platinum efficiency, this PSU reduces energy waste and operating costs in high-density server environments. Its hot-swap design enables quick replacement, minimizing downtime and maintaining service availability.

Ideal use cases

• Maintaining uptime in enterprise data centers
• Upgrading or replacing PSUs in Dell PowerEdge servers
• Redundant power configurations for mission-critical workloads

Good to know

The unit is manufactured by Lite-On and carries alternate part numbers 0NCNFF, 74HND, and 074HND. It features active fan cooling to ensure reliable operation under load.