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Rectangular silver metal power supply unit with ventilation grille and label sticker

WMtec

WMtec server power supply OptiPlex 3020 7020 9020 SFF 255W

SKU CH-N2BD-CST30

255W replacement power supply fits OptiPlex 3020, 7020 and 9020 small form factor desktops

  • Powers OptiPlex 3020, 7020 and 9020 SFF desktops with 255 W output
  • Replaces Dell part numbers YH9D7, 3XRJ0, T4GWM and H1FWX
  • Works worldwide on 100–240 V 50–60 Hz mains supply
  • Matches OEM models H255ES-00, D255ES-00, AC255ES-00 and L255ES-00
  • Delivers up to 255 W from a compact SFF form factor

Dell OptiPlex SFF Compatibility

This new WMtec power supply fits Dell OptiPlex 3020, 7020 and 9020 small-form-factor desktops. It replaces Dell part numbers YH9D7, 3XRJ0, T4GWM and H1FWX and matches model numbers H255ES-00, D255ES-00, AC255ES-00 and L255ES-00. The unit is fully tested before dispatch.

Suitable for Direct Replacement Only

Buyers restoring or repairing one of the listed OptiPlex SFF models will find a drop-in fit. Builders working on other Dell chassis, full-tower OptiPlex variants, or non-Dell systems cannot use this unit because the connector layout and bracket are specific to the 3020, 7020 and 9020 SFF platform.

255 W Maximum Output

The supply delivers up to 255 W from a 100-240 V, 4.6 A, 50-60 Hz input. That headroom covers the original 240 W rating and typical SFF components such as the CPU, integrated graphics, memory and a few drives. Systems upgraded with discrete graphics cards or many additional drives may exceed the available power.

Highlights

  • Powers OptiPlex 3020, 7020 and 9020 SFF desktops with 255 W output
  • Replaces Dell part numbers YH9D7, 3XRJ0, T4GWM and H1FWX
  • Works worldwide on 100–240 V 50–60 Hz mains supply
  • Matches OEM models H255ES-00, D255ES-00, AC255ES-00 and L255ES-00
  • Delivers up to 255 W from a compact SFF form factor

Specifications

No published specifications for this item yet.

Questions about this item

Which Dell OptiPlex models does this 255W power supply fit?

It is compatible with the OptiPlex 3020, 7020 and 9020 small form factor chassis.

Will it power on with a 100V mains supply?

Yes, the input range is 100-240V at 50-60Hz so it works on both 100V and 240V circuits.

How can I confirm the unit is delivering power after installation?

The system should POST and boot normally; if the OptiPlex starts without power warnings the supply is operating correctly.

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