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Rectangular silver server PSU with rear fan grille and power socket

WMtec

WMtec HCWV2 H255ES-01 255W server power supply

SKU CH-6YGN-CWPMS

255 W power supply for Dell OptiPlex 3020, 7020 and 9020 small form factor desktops

  • Delivers 255 W for stable SFF operation
  • Wide 100–240 V input suits global power grids
  • 6 A draw keeps circuit loading low
  • 50–60 Hz range matches standard mains frequencies
  • Direct fit for OptiPlex 3020 7020 9020 SFF

255 W SFF power supply

The WMtec HCWV2 H255ES-01 is a 255 watt server power supply built for Dell OptiPlex 3020, 7020 and 9020 small form factor desktops. It accepts 100 to 240 volt input at 4.6 amps across 50 to 60 hertz. Replacement part numbers include HCWV2, 0HCWV2 and CN-0HCWV2.

Who this suits and who should look elsewhere

This unit suits owners of the listed OptiPlex SFF models needing a direct 255 watt replacement. It is not for builders using standard ATX cases, proprietary non-Dell chassis or systems requiring higher wattage. Buyers needing redundant or hot-swap server supplies should look elsewhere.

Compatibility checks before ordering

Confirm your OptiPlex is a 3020, 7020 or 9020 small form factor model before purchase. Verify the existing supply carries part number HCWV2, 0HCWV2 or CN-0HCWV2. Ensure the 255 watt rating matches your system requirements and that the AC input range suits your local mains voltage.

How it compares

Measured against everything we stock in Server & Hot-Plug PSUs, at today’s prices. Recalculated every night.

Price $61.99
Cheaper than about 83% of the 3,798 comparable items (median $131.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Does this power supply fit directly into a Dell OptiPlex 3020 SFF case without an adapter bracket?

Yes, the HCWV2 H255ES-01 is designed for Dell OptiPlex 3020, 7020 and 9020 Small Form Factor chassis and uses the native mounting points.

Will the 255 W unit safely power a system that previously used a lower-wattage Dell SFF supply?

The supply delivers up to 255 W from a 100-240 V~ 4.6 A input and matches the original Dell part numbers HCWV2, 0HCWV2 and CN-0HCWV2.

How can I verify the PSU is operating correctly after installation?

The system should power on normally and remain stable under load; the fan will spin and the motherboard will receive the expected voltages.

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