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Grey ATX power supply unit with 80mm fan and built-in cables

Replace Power

Replace Power 420W ATX PSU for Dell 518 519 530 531 537 540 545 546 745 755 760

SKU CH-F0S7-58JQS

A 420 W ATX power supply with reduced depth fits Dell 518 519 530 531 537 540 545 546 745 755 760 systems and provides 24-pin, 4-pin CPU, three SATA and multiple Molex connectors

  • ColorGrey
  • TypeATX
  • Fans1
  • Weight4
  • Fits many Dell desktops including 518 519 530 531 537 540 545 546 745 755 760
  • Shorter depth than standard ATX units for tighter cases
  • 420 W peak and 280 W continuous power delivery
  • Single 80 mm fan keeps temperatures stable
  • SATA Molex and floppy connectors cover legacy and modern drives

Replacement ATX PSU for listed Dell models

This 420W ATX unit is built as a direct replacement for Dell 518 519 530 531 537 540 545 546 745 755 760 desktops. It delivers a total continuous output of 280W across +5V, -5V, +12V1, +12V2, +3.3V, -12V and +5V-SB rails. The supply accepts 110/220V AC input at 47~63Hz and meets ROHS and CE requirements.

Reduced depth chassis with fixed cable set

The grey housing measures 5.86" x 3.3" x 4" so it fits a standard ATX slot without extending as far as a traditional PSU. An 80mm fan provides cooling. Cables are fixed and terminate in a 24 (20+4) pin motherboard connector, one 4-pin CPU connector, three SATA 15-pin connectors, two Molex 4-pin connectors and one floppy 4-pin connector.

Upgrade path from a failed or underpowered OEM unit

It replaces an original Dell supply that has failed or cannot support added drives. The jump is worth it when the system needs reliable 280W continuous power with low ripple and noise, and the reduced depth avoids clearance issues in compact cases. Buyers who need more than three SATA power leads or a higher continuous wattage should look elsewhere.

Points forts

  • Fits many Dell desktops including 518 519 530 531 537 540 545 546 745 755 760
  • Shorter depth than standard ATX units for tighter cases
  • 420 W peak and 280 W continuous power delivery
  • Single 80 mm fan keeps temperatures stable
  • SATA Molex and floppy connectors cover legacy and modern drives

Caractéristiques

BrandReplace Power
ModelDell 518 519 530 531 537 540 545 546 745 755 760
ColorGrey
TypeATX
Fans1
Weight4

Questions sur cet article

What ATX connector does the 420 W unit provide and what maximum power does it deliver?

The supply includes a 24 (20+4) pin ATX connector and is rated for a maximum output of 420 watts.

What are the exact dimensions and weight so I can confirm it fits my Dell chassis?

It measures 5.86 x 3.3 x 4 inches and weighs 4 pounds, with reduced depth for wider Dell compatibility.

How do I install the PSU and which connector is most often missed?

Mount the unit in the standard ATX slot, connect the 24-pin motherboard plug, the 4-pin CPU plug, three SATA 15-pin leads, two Molex 4-pin leads and the floppy 4-pin lead; the 4-pin CPU connector is the one most frequently overlooked.

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