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Silver metal rectangular AT power supply unit with ventilation grille and cable bundle

myVolts

myVolts 300W AT Power Supply for Dell Optiplex GX520 GX620

SKU CH-RD9R-N5Z0G

300 W AT power supply replaces legacy Liteon units in Dell Optiplex GX520 and GX620 with 20+4-pin ATX, 4-pin ATX12V, three SATA, three peripheral and one floppy connector

  • TypeAT
  • Delivers 300W steady power for Dell Optiplex GX520 GX620
  • Reduced 5.9" depth fits tight chassis spaces
  • Over-current and over-power protection safeguards components
  • Low-noise, low-ripple fan keeps system quiet
  • Input 115/230 V works worldwide without switching

Replacement PSU for Optiplex GX520 GX620

This 300 W AT power supply replaces legacy Liteon units such as the PS-5251-7 PS-5281-7VR and PS-5301-08HA. It is built for Dell Optiplex GX520 and GX620 desktops that need a direct swap. The reduced-depth chassis measures 5.9 height by 3.4 width to fit tight bays.

20+4-pin ATX and 4-pin ATX12V motherboard connectors

The single specification that decides fit is the connector set: one 20+4-pin ATX plug, one 4-pin ATX12V plug, three peripheral plugs, one floppy plug and three SATA power plugs. Without the 4-pin ATX12V the board will not post.

Standard AT screw pattern and short depth

Installation uses the standard AT mounting holes so no adapter brackets are required. The shorter depth clears rear-panel cables that block longer units. The only common issue is forgetting to seat the 4-pin ATX12V connector fully before powering on.

Points forts

  • Delivers 300W steady power for Dell Optiplex GX520 GX620
  • Reduced 5.9" depth fits tight chassis spaces
  • Over-current and over-power protection safeguards components
  • Low-noise, low-ripple fan keeps system quiet
  • Input 115/230 V works worldwide without switching

Caractéristiques

TypeAT

Questions sur cet article

How much power will the 300W rating actually deliver to my components?

The unit supplies 300W of steady output for the Dell Optiplex GX520 and GX620, with over-current and over-power protection built in.

What does the 20+4-pin ATX connector and 4-pin ATX12V connector support?

The 20+4-pin motherboard connector and 4-pin CPU power connector fit the Optiplex GX520 and GX620 motherboards directly.

Will the 5.9-inch height and 3.4-inch width fit my Optiplex case?

The reduced depth design measures 5.9" high by 3.4" wide, matching the space in Dell Optiplex GX520 and GX620 chassis.

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