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Rectangular black metal power supply unit with cooling fan grille and multiple cable connectors

myVolts

myVolts 300W Power Supply for Dell OptiPlex 3847 390 790 990 3010 7010 9010MT

SKU CH-MM10-WGVES

300 W replacement power supply for compatible Dell OptiPlex desktops, delivering 100–127 V at 8.0 A or 200–240 V at 4.5 A with 24-pin, 4-pin and STAR*4 connectors

  • Powers Dell OptiPlex towers with 300W output
  • Replaces 12 listed Dell part numbers including G9MTY
  • Supplies 100-127V at 8.0A and 200-240V at 4.5A
  • Connects via 24-pin, 4-pin and STAR*4 connectors
  • Fits chassis measuring 8.66 by 3.54 by 3.54 inches

Replacement PSU for Dell OptiPlex MT

This 300W power supply replaces the original unit in Dell OptiPlex 3847, 390, 790, 990, 3010, 7010 and 9010MT desktops. It matches the form factor and mounting points used in those tower chassis. The unit is new and tested before shipping.

Connector layout: 24-pin, 4-pin and STAR*4

The cable harness provides a 24-pin main connector (P1), a 4-pin CPU connector (P2) and a STAR*4 auxiliary connector (P3). This exact combination is required by the listed OptiPlex motherboards. Input voltage covers 100-127V at 8.0A and 200-240V at 4.5A, 50-60Hz.

Suits owners of listed OptiPlex towers needing

Buyers with small-form-factor or micro-tower OptiPlex models should look elsewhere because the physical dimensions (8.66 x 3.54 x 3.54 in) and connector set differ. Systems requiring higher wattage or different pin-outs are not supported by this unit.

Highlights

  • Powers Dell OptiPlex towers with 300W output
  • Replaces 12 listed Dell part numbers including G9MTY
  • Supplies 100-127V at 8.0A and 200-240V at 4.5A
  • Connects via 24-pin, 4-pin and STAR*4 connectors
  • Fits chassis measuring 8.66 by 3.54 by 3.54 inches

Specifications

No published specifications for this item yet.

Questions about this item

What does the 300W rating actually deliver inside a Dell OptiPlex MT chassis?

The unit supplies up to 300 watts total across its rails, matching the original L300PM and H300PM specifications for the listed OptiPlex tower models.

Which AC input standard does the supply use and what voltage range does it cover?

It accepts 100-127 V at 8.0 A or 200-240 V at 4.5 A, 50-60 Hz, so it works on both North American and European mains without a switch.

What physical space and connectors are needed to fit this PSU into the case?

Dimensions are 8.66 x 3.54 x 3.54 in with P1 24-pin, P2 4-pin and STAR 4-pin connectors, matching the MT form factor mounting points.

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