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Rectangular black metal AT power supply unit with multiple cable connectors visible

myVolts

myVolts 240W AT Power Supply for OptiPlex SFF

SKU CH-EPWW-Y85DV

Replacement AT power supply delivering 240W for OptiPlex SFF models including 390, 790, 960, 990, 3010, 7010 and 9010

  • Product typeAT
  • 240W output powers demanding OptiPlex SFF builds
  • AT form factor fits Dell 3010, 7010, 9010 SFF chassis
  • Broad part-number match covers 3WN11, 709MT, 2TXYM and more
  • Universal 100-240V input works worldwide without a converter
  • 24-pin ATX, 4-pin CPU, dual SATA and slimline connectors included

Replacement power supply for Dell OptiPlex SFF

This 240 W AT power supply replaces the original unit in Dell OptiPlex 390, 790, 960, 990, 3010, 7010 and 9010 small-form-factor desktops. It accepts 100-240 V input at 50-60 Hz and delivers up to 240 W of continuous power. The unit is brand new and matches part numbers including 3WN11, 709MT and H240AS-00.

Suitable for SFF maintenance.

Technicians repairing or upgrading the listed OptiPlex SFF models can use this supply as a direct replacement. It provides the exact connectors required by those chassis. Builders needing more than 240 W, a different form factor or connectors not listed here should look at other units.

24-pin ATX plus 4-pin CPU and SATA power leads

The harness includes a 24-pin ATX connector (3 inch), a 4-pin ATX12V connector (18.9 inch), two SATA power connectors (5.5 inch and 7.48 inch) and a 2-pin slimline SATA connector (6.1 inch). These cables match the motherboard and drive connections in the compatible OptiPlex systems.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $82.99
Cheaper than about 74% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeAT

Questions about this item

What does the 240 W rating mean once the unit is installed in an OptiPlex SFF?

It is the maximum continuous output the supply can deliver to the motherboard, drives and add-in cards in the listed small-form-factor desktops.

What interface standard does the 24-pin ATX connector follow and what does it cap in practice?

The 24-pin ATX connector follows the AT specification and limits total system draw to 240 W.

What physical clearance does the power supply need to fit the OptiPlex 3010, 7010 or 9010 SFF chassis?

It is built to the same dimensions as the original H240AS-00 and L240AS-00 units used in those models.

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