DELL 20WFG OptiPlex 5040/7040 180W 8-Pin Power Supply

Dell 20WFG 180W 8-Pin Power Supply

This Dell 20WFG unit is a 180 watt desktop power supply designed for OptiPlex 5040 and 7040 small form factor systems. It delivers fixed cabling through an 8-pin connector to the motherboard. The unit is new and includes a single cooling fan. Buyers needing higher wattage or modular cables for custom builds should look elsewhere.

Build fit for OptiPlex 5040 and 7040 SFF

The power supply fits directly into the OptiPlex 5040 and 7040 small form factor chassis using the native 8-pin interface. Its non-modular design means all cables are permanently attached, reducing loose wiring inside the compact case. The single fan draws air through the unit to exhaust heat out the rear. Systems requiring standard ATX 24-pin or additional PCIe power connectors cannot use this unit.

Sustained load behaviour with single fan cooling

Under continuous load the single fan maintains airflow across internal components up to the rated 180 watt maximum. Fixed cable routing keeps impedance consistent during extended operation. The compact SFF form factor limits thermal mass, so prolonged peak output relies on case ventilation to prevent heat buildup. Workloads demanding sustained draws above 180 watts will exceed this unit's capacity.