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Compact silver TFX power supply unit with 80mm fan visible on rear grille

myVolts

myVolts 420 W TFX Power Supply for Dell Inspiron 546S 545S

SKU CH-BNXB-M41VW

TFX power supply delivering 420 W to replace 200, 250, 300 or 350 W units in Dell Inspiron 546S and 545S small-form-factor PCs

  • Product typeAT
  • 420 W output powers demanding upgrades
  • TFX form factor fits Dell Inspiron 546S 545S slim cases
  • Replaces 200, 250, 300, 320 or 350 W units directly
  • 20+4 pin, 4-pin CPU, 2× Molex, Floppy, 2× SATA connectors included
  • 80 mm double-ball-bearing fan runs at 100–240 V input

Dell Inspiron 546S 545S TFX PSU Upgrade

This 420 W TFX power supply replaces the original 200 W, 250 W, 300 W, 320 W or 350 W unit in Dell Inspiron 546S and 545S small-form-factor desktops. It delivers the higher wattage headroom those chassis need for upgraded components.

Build Integration

The unit fits the TFX form factor and accepts 100 V to 240 V input, so it works in the existing case without modification. A 20+4 pin motherboard connector, a 4-pin CPU connector, two Molex, a floppy connector and two SATA connectors cover the power rails those systems use.

Cooling and Connector Benefits

An 80 mm double-ball-bearing fan provides the cooling required for sustained 420 W output. The bundled SATA and Molex leads free builders from hunting adapters when adding drives or peripherals to the Slimline chassis.

How it compares

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

Price $94.99
Cheaper than about 70% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeAT

Questions about this item

Will the 420 W maximum output handle sustained loads without throttling?

The unit delivers up to 420 W continuous power through its 20+4 pin motherboard, 4-pin CPU, two Molex, floppy and two SATA connectors.

How loud and hot does the 80 mm double-ball-bearing fan get during all-day operation?

The 80 mm double-ball-bearing fan is designed for steady airflow in slimline and SFF chassis, keeping temperatures stable during extended use.

Which existing cables or connectors must my Dell Inspiron 546S or 545S already have for this TFX supply to work?

Your system needs a standard 20+4 pin motherboard header, a 4-pin CPU header, plus Molex, floppy or SATA drives to use the supplied connectors.

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