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

myVolts

myVolts TFX 275W Power Supply for HP SFF

SKU CH-P8DZ-TXDAN

TFX form-factor 275W replacement PSU for HP SFF desktops with 20+4 pin, 4-pin CPU, SATA and Molex connectors

  • TypeAT
  • 275 W steady power for reliable system operation
  • 420 W upgrade headroom replaces 200–350 W units
  • 80 mm double-ball-bearing fan keeps temperatures low
  • 20+4 pin, 4-pin CPU, SATA and Molex connectors fit HP SFF builds
  • 100–240 V auto-ranging input works worldwide

TFX 275W replacement for HP SFF

This TFX form-factor power supply delivers 275 watts and fits HP SFF systems using part numbers 447402-001 and 447585-001. It also replaces units rated at 200, 250, 300 or 350 watts. An 80 mm double-ball-bearing fan provides cooling. The unit accepts 100 to 240 V input.

Fits slimline builds with standard AT connectors

The PSU uses a 20+4 pin motherboard connector, a 4-pin CPU connector, three Molex connectors, a floppy connector and three SATA connectors. TFX dimensions allow installation in slimline and small-form-factor chassis where full-size ATX units cannot fit. No adapter cables are required for the listed HP models.

Upgrade path to 420 W ceiling

The manufacturer rates this design for a 420 W peak, giving headroom above the 275 W continuous rating. That margin supports additional drives or expansion cards without changing the power supply again. The included connector set covers legacy and current storage devices in one package.

Points forts

  • 275 W steady power for reliable system operation
  • 420 W upgrade headroom replaces 200–350 W units
  • 80 mm double-ball-bearing fan keeps temperatures low
  • 20+4 pin, 4-pin CPU, SATA and Molex connectors fit HP SFF builds
  • 100–240 V auto-ranging input works worldwide

Caractéristiques

TypeAT

Questions sur cet article

What is the continuous power limit before the 275 W supply trips under sustained load?

The unit delivers 275 W continuous output and can handle peaks up to 420 W before protection engages.

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

The 80 mm fan uses double ball bearings for long life and moves enough air to keep temperatures stable without excessive noise.

Which motherboard and drive connectors must already be present in the case for this TFX unit to work?

It requires a 20+4-pin motherboard header, a 4-pin CPU header, three SATA power ports, three Molex ports and a floppy connector.

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