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Compact silver TFX power supply unit with rear fan grille and cable bundle

myVolts

myVolts 420W TFX Power Supply for HP Pavilion Slimline s5414y s5500z s5508f

SKU CH-0490-5MV9H

TFX form-factor replacement PSU delivers 420 W for HP Pavilion Slimline s5414y, s5500z and s5508f models, upgrading 200 W, 250 W, 300 W or 350 W units with 20+4-pin, 4-pin CPU, Molex.

  • TypeAT
  • Higher 420W output replaces 250W 300W 320W 350W units
  • TFX form factor fits HP Pavilion Slimline s5414y s5500z s5508f
  • 20+4 pin motherboard 4-pin CPU 2x Molex floppy 2x SATA connectors
  • 80mm double ball bearing fan provides cooling
  • 100-240V input works worldwide

Replacement PSU for HP Slimline

This new 420 W TFX power supply replaces the original 250 W, 300 W or 320 W units in HP Pavilion Slimline s5414y, s5500z and s5508f desktops. It delivers an AT-type output through a 20+4 pin motherboard connector, a 4-pin CPU connector, two Molex, a floppy and two SATA plugs. The compact form factor fits the slim chassis without modification.

420 W continuous output

The single figure that determines suitability is the 420 W steady rating, which exceeds the factory 200 W to 350 W range. Builders needing more headroom for discrete graphics cards or additional drives should verify their total system draw against this ceiling before purchasing.

80 mm double ball-bearing fan

An 80 mm fan with double ball bearings provides active airflow across the unit at 100–240 V input. The design targets quiet, reliable cooling in the constrained Slimline enclosure without requiring external ventilation changes.

Highlights

  • Higher 420W output replaces 250W 300W 320W 350W units
  • TFX form factor fits HP Pavilion Slimline s5414y s5500z s5508f
  • 20+4 pin motherboard 4-pin CPU 2x Molex floppy 2x SATA connectors
  • 80mm double ball bearing fan provides cooling
  • 100-240V input works worldwide

Specifications

TypeAT

Questions about this item

How much continuous power will the 420 W rating actually deliver inside my Slimline?

The unit is rated for 420 W output and replaces the original 200 W, 250 W, 300 W or 350 W PSU, giving extra headroom for added drives or a discrete graphics card.

The 20+4 pin motherboard connector looks like ATX — will it work with my board?

Yes, the 20+4 pin plug fits standard ATX motherboards and the TFX form factor matches the Slimline chassis mounting holes.

What clearance does the 80 mm double-ball-bearing fan need in the Slimline case?

The fan sits in the standard TFX housing, so it aligns with the existing vent cut-out and requires no extra space beyond the stock PSU cavity.

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