Power supply Dell WW109 280W PFC for compatible Dell systems

Power supply Dell WW109 280W PFC for compatible Dell systems is a replacement internal power unit with a rated output of 280 watts and active power factor correction (PFC). It is intended as a direct swap for compatible Dell desktop or entry-level server systems, offering regulated DC rails for core components. The unit is designed to restore or maintain system power stability and to serve as a spare part for repair and maintenance tasks.

Advantages

The 280W output and active PFC ensure stable voltage delivery and improved efficiency under varying loads. Built to fit compatible Dell chassis and connectors, the power supply simplifies replacement and reduces installation time. Passive and active design features provide consistent cooling and reliable operation during typical office or datacentre workloads. The unit supports uninterrupted operation of processors, storage drives and peripheral cards when used within its rated power envelope.

Suitable for

• Replacement of a failed internal power supply in compatible Dell desktop or entry-level server systems
• Service and repair tasks performed by IT technicians and service centers
• Stocking as a spare part for rapid on-site maintenance
• System upgrades where a higher-quality replacement or refurbished unit is required

Key specifications

• Rated output power: 280 W
• Power factor correction: Active PFC
• Form factor: Internal power supply designed for compatible Dell chassis
• Cooling: Integrated fan and airflow path compatible with chassis ventilation
• Protection features: Over-voltage and over-current protection (implemented at unit level)
• Input voltage range: Standard AC mains range for desktop/server use
• Output connectors: Standard internal connectors compatible with supported Dell motherboards and drives

How to use

Before installation, disconnect the system from mains power and discharge residual charge by pressing the power button with the unit unplugged. Remove the chassis cover following the system manufacturer’s service manual and disconnect the existing power supply connectors from the motherboard and drives. Install the replacement unit in the original mounting location and secure it with the chassis fasteners. Reconnect all power connectors to the motherboard, storage drives and peripherals, ensuring each connector is fully seated. Replace the chassis cover, reconnect mains power and perform a power-on test to verify system boot and stable operation.

Usage recommendations

Use this power supply only in systems listed as compatible by the system manufacturer or where connector and mechanical compatibility are confirmed. Match the unit’s rated power to the system’s typical load plus a margin for peak consumption. If the system exhibits repeated power events after replacement, inspect other components and wiring, and consult technical documentation or qualified service personnel.