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Grey ATX power supply unit with single fan

Replace Power

Replace Power 550-105a 550-106a power supply

SKU CH-862A-X342N

Grey ATX replacement power supply for HP Pavilion 550-105a and 550-106a desktops with 20+4 pin, 4-pin +12V, 6-pin and SATA connectors

  • ColorGrey
  • TypeATX
  • Fans1
  • Weight1
  • Compatible upgrade for HP Pavilion 550-105a and 550-106a desktops
  • Standard ATX form factor fits existing chassis mounting points
  • 20+4 pin ATX connector powers modern motherboards directly
  • +12V 4-pin and 6-pin connectors supply CPU and graphics cards
  • Three SATA connectors drive multiple storage devices

Direct replacement for HP Pavilion 550-105a

This Replace Power unit is built as a drop-in substitute for the original power supply in HP Pavilion 550-105a and 550-106a desktop PCs. It uses a standard ATX form factor and a grey enclosure. The single fan provides cooling for typical office workloads.

Connector mix determines compatibility

The unit supplies one 20+4 pin ATX connector, one +12V 4-pin power connector, one 6-pin power connector and three SATA connectors. A mini-SATA connector for a 5-inch device is also included. Verify that your motherboard and drives match this exact set before ordering.

Simple swap if the pin-out matches

Installation follows the usual ATX procedure: unplug the old unit, connect the new cables and secure the four mounting screws. The main risk is a proprietary pin-out on the original HP motherboard; if the 20+4 or 4-pin wiring differs, the system will not start.

Highlights

  • Compatible upgrade for HP Pavilion 550-105a and 550-106a desktops
  • Standard ATX form factor fits existing chassis mounting points
  • 20+4 pin ATX connector powers modern motherboards directly
  • +12V 4-pin and 6-pin connectors supply CPU and graphics cards
  • Three SATA connectors drive multiple storage devices

Specifications

BrandReplace Power
ColorGrey
TypeATX
Fans1
Weight1

Questions about this item

How much power does the 550 W unit actually deliver to a real system?

The 550 W rating is the continuous output the supply can sustain across its rails when installed in a compatible desktop.

Which ATX connector standard does the 20+4 pin plug follow and what does that limit?

The 20+4 pin ATX connector follows the standard ATX specification and limits the motherboard power delivery to what that interface defines.

What mounting pattern and clearance does the grey ATX chassis need?

The grey ATX form factor fits standard ATX mounting holes and requires the usual rear clearance for the single fan exhaust.

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