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Rectangular black AT power supply unit with multiple cables and connectors visible

myVolts

myVolts Power Supply for HP Pavilion 550-108a 550-110a DT PC

SKU CH-6CAV-3RNJE

Replacement power supply for HP Pavilion 550-108a and 550-110a desktops with ATX, 12V, 6-pin and SATA connectors

  • TypeAT
  • Replacement PSU restores power to HP Pavilion 550-108a and 550-110a desktops
  • 20+4 pin ATX connector fits standard motherboard power socket
  • +12V 4-pin connector supplies dedicated CPU power
  • Three SATA connectors support multiple drives and peripherals
  • 6-pin power connector available for graphics cards or add-in boards

Replacement PSU for HP Pavilion 550 series

This power supply is built as a direct replacement for the HP Pavilion 550-108a and 550-110a desktop PCs. It uses an AT form factor to match the original chassis and mounting points. The unit is intended for owners restoring a failed system or upgrading an ageing original supply. It arrives new and ready to install.

Upgrading from the factory unit

The supply replaces the original equipment power source when it fails or can no longer support added components. A swap is worth it when the existing unit cannot deliver stable power to a discrete graphics card or extra drives. The included 6-pin connector enables GPU upgrades that the stock PSU often lacks. It also adds headroom for additional storage devices.

Build integration and connector layout

Installation requires a motherboard with a 20+4 pin ATX socket and a +12V 4-pin CPU power header. Three SATA power connectors and one mini-SATA connector support multiple hard drives or SSDs. The single 6-pin PCIe connector feeds a mid-range graphics card. Cable lengths suit the compact Pavilion 550 chassis without excess slack.

Highlights

  • Replacement PSU restores power to HP Pavilion 550-108a and 550-110a desktops
  • 20+4 pin ATX connector fits standard motherboard power socket
  • +12V 4-pin connector supplies dedicated CPU power
  • Three SATA connectors support multiple drives and peripherals
  • 6-pin power connector available for graphics cards or add-in boards

Specifications

TypeAT

Questions about this item

Will the 20+4 pin ATX connector and 4-pin +12V connector reach the motherboard on an HP Pavilion 550-108a?

The power supply includes a 20+4 pin ATX connector and a 4-pin +12V connector designed for the HP Pavilion 550-108a and 550-110a motherboards.

Which screws secure this PSU to the HP Pavilion 550-110a chassis?

Reuse the four case screws that held the original unit; the replacement aligns with the standard AT mounting holes on the rear panel.

When should I replace the SATA power cables if I add more drives later?

The unit provides three SATA connectors plus one mini-SATA connector; replace cables only if insulation cracks or connectors become loose.

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