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Rectangular metal PSU unit with ventilation grille and label showing 290W rating

WMtec

WMtec 290W server power supply for OptiPlex 3020 7020 9020 MT

SKU CH-3292-4T271

Replacement 290 W unit for OptiPlex 3020, 7020 and 9020 mini-tower desktops

  • Delivers 290W to keep OptiPlex 3020 7020 9020 MT running
  • Replaces part numbers WHN49 XFXKX P2W4R for exact fit
  • Works with L290EM-00 D290EM-00 F290EM-00 model numbers
  • Accepts 100-240V 50-60Hz input for worldwide use
  • Brand-new unit ready for immediate installation in Mini Tower

290W replacement for OptiPlex MT systems

This new power supply matches the 290 watt rating required by Dell OptiPlex 3020, 7020 and 9020 mini-tower chassis. It accepts a wide 100-240 volt input range at 5.4 amps and 50-60 hertz, so it works on standard mains worldwide. The unit replaces Dell part numbers WHN49, XFXKX and P2W4R directly.

Fits OptiPlex 3020 7020 9020 MT and T1700

It suits anyone restoring or repairing those specific mini-tower models when the original supply has failed or is missing. Builders working with small-form-factor, micro-tower or any non-MT OptiPlex should look elsewhere because the connector layout and mounting differ. Systems that demand more than 290 watts of continuous power also need a higher-rated unit.

290 watt maximum output

The single specification that decides fitment is the 290 watt maximum power rating combined with the listed model numbers L290EM-00, D290EM-00 and F290EM-00. If the target computer requires exactly that wattage and carries one of those model labels, this supply is the correct match.

How it compares

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

Price $71.99
Cheaper than about 80% 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

Will the L290EM-00 fit my OptiPlex 9020 MT case?

Yes, the L290EM-00 is built for OptiPlex 3020, 7020 and 9020 MT mini-tower chassis, so it matches the mounting points and depth of those models.

What is the correct way to swap the D290EM-00 without triggering a no-post?

Disconnect the mains cord, press the power button to drain residual charge, remove the four chassis screws, slide the old unit out, insert the replacement until the latch clicks, refit the screws, then reconnect the 24-pin and 4-pin CPU cables before restoring power.

When should I plan to replace the F290EM-00 fan or the whole unit?

Expect the internal fan to run continuously at 50-60 Hz input; if bearing noise appears or the 290 W output becomes unstable under load, replace the entire power supply rather than attempting a fan-only repair.

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