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Compact TFX power supply unit with metal casing and rear cooling fan

myVolts

myVolts 400 W TFX Power Supply for Dell Inspiron 570S 580S

SKU CH-H133-8EV1G

TFX power supply delivering 400 W with 20+4 pin motherboard, 4-pin CPU, two Molex, floppy and two SATA connectors for Dell Inspiron 570S and 580S

  • Product typeAT
  • Delivers 400 W continuous power for demanding components
  • TFX form factor fits Slimline and SFF Dell chassis
  • Replaces 200, 250, 300 or 350 W units with 420 W peak capacity
  • Direct-fit connectors include 20+4 pin motherboard, 4-pin CPU, 2× Molex, floppy, 2× SATA
  • 80 mm fan provides cooling across 100–240 V input range

Compatible Dell SFF Models

This new 400 W TFX power supply replaces the original unit in Dell Inspiron 570S and 580S small-form-factor desktops. It accepts 100 to 240 V input and uses an 80 mm cooling fan. The upgrade delivers 400 W continuous output, stepping up from the factory 200, 250, 300 or 350 W ratings.

Who Should Consider This Unit

Owners of the listed Dell SFF systems who need a direct-replacement PSU with standard 20+4 pin motherboard, 4-pin CPU, two Molex, floppy and two SATA connectors will find it fits without modification. Buyers whose cases require a different form factor or who need more than two SATA power leads should look elsewhere.

Decisive Specification

The TFX physical format and the exact connector set — 20+4 pin, 4-pin CPU, two Molex, floppy and two SATA — determine whether this unit will install and power the components in the target Dell chassis.

How it compares

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

Price $98.99
Cheaper than about 68% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeAT

Questions about this item

How do I install the TFX power supply in my Dell Inspiron 570S or 580S, and what step is often missed?

Fit the TFX unit into the SFF chassis, connect the 20+4 pin motherboard plug, the 4-pin CPU plug, two Molex, one floppy and two SATA cables, then ensure the 80 mm fan faces the case vent so hot air exits.

What maintenance or replacement will this 400 W unit need later?

The 80 mm cooling fan is the only moving part; clean dust from its blades and the heatsink periodically, and replace the fan if it becomes noisy or stops spinning.

What limit appears first when the supply runs at high load for a long time?

The 400 W continuous output ceiling is reached before the 420 W peak rating, so sustained draws above 400 W will trigger protection shutdown.

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