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Standard ATX power supply unit with 20+4 pin, 12V 4-pin, SATA and 6-pin connectors

myVolts

myVolts Power Supply 550-103la ATX 20+4 Pin 12V 4-Pin SATA

SKU CH-MJZW-GWYF5

Replacement AT power supply with 20+4 pin ATX, 12V 4-pin, 6-pin and three SATA connectors

  • TypeAT
  • Replacement PSU for HP Pavilion 550-103la desktop
  • 20+4 pin ATX connector powers standard motherboards
  • Dedicated +12 V 4-pin connector feeds CPU reliably
  • Three SATA connectors support multiple drives
  • Extra 6-pin power connector adds GPU flexibility

Replacement PSU for HP Pavilion 550-103la

This power supply is built as a direct replacement for the HP Pavilion Desktop 550-103la. It fits the original chassis and connector layout so the system powers on without adapter cables. The unit is new and intended for owners restoring or upgrading that specific desktop model.

Connector limits for the platform

The loom provides one 20+4 pin ATX connector, one +12V 4-pin CPU connector, three SATA drive connectors and a single 6-pin peripheral connector. No PCIe 6+2 pin or additional SATA leads are included, so graphics cards needing dedicated power or builds with more than three SATA devices cannot be supported.

Upgrading from a failed or lower-wattage unit

It replaces the factory PSU when that unit has failed or cannot sustain the system load. The jump is worth it when the original supply no longer holds voltage under load or when a newer CPU or extra drives demand more 12 V current than the old unit could deliver.

Highlights

  • Replacement PSU for HP Pavilion 550-103la desktop
  • 20+4 pin ATX connector powers standard motherboards
  • Dedicated +12 V 4-pin connector feeds CPU reliably
  • Three SATA connectors support multiple drives
  • Extra 6-pin power connector adds GPU flexibility

Specifications

TypeAT

Questions about this item

Should I choose this power supply for my HP Pavilion 550-103la or look for a different model?

This unit is built as a direct replacement for the HP Pavilion Desktop 550-103la, so it matches the original form factor and connector layout.

What does the 20+4 pin ATX connector actually deliver when installed in the desktop?

The 20+4 pin ATX connector supplies main board power, while the +12V 4-pin connector feeds the processor and the three SATA connectors drive storage devices.

How does the SATA connector count limit the drives I can add?

With three SATA power connectors you can run up to three SATA hard drives or SSDs simultaneously without needing adapters.

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