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Grey ATX power supply unit with single 80mm fan

Replace Power

Replace Power RPSU-C99-21 420W ATX Power Supply

SKU CH-N7TM-XT01F MPN RPSU-C99-21

420W ATX replacement supply with 80mm cooling, switchable 110V/220V input and connectors for SATA, 20+4 pin motherboard, 12V ATX and multiple peripheral leads

  • ColorGrey
  • TypeATX
  • Fans1
  • Weight0.1
  • Delivers 420W to power compatible HP Media Center desktops
  • Switchable 110V or 220V input suits different mains supplies
  • 80mm fan provides active cooling for the unit
  • Includes 20+24 pin ATX, 12V, SATA and multiple peripheral connectors
  • Direct replacement for listed HP models including m7557c m7560n m7560y CTO m7567c m7570kr m7570n

Replacement Power Supply for HP Media Center

This 420W ATX unit replaces the original power module in HP Media Center desktops such as the m7557c, m7560n, m7560y, CTO, m7567c, m7570kr and m7570n. It delivers 420W of power through a standard ATX form factor and a single 80mm cooling fan. The supply is intended for owners of those specific HP systems who need a direct replacement for a failed or ageing unit.

Connector Limits and Voltage Selection

The unit provides one 15-inch SATA connector, one 14-inch ATX connector supporting both 20-pin and 24-pin configurations, one 14-inch 12V ATX connector, two 15-inch large power connectors, two 6-inch large power connectors and one 6-inch small power connector. Input voltage is selectable between 110V and 220V via a physical switch. No additional connectors or higher-wattage outputs are included, so systems requiring more power or different interfaces will not be supported.

Straightforward Swap with Cable Reach Checks

Installation consists of removing the old supply, mounting this grey ATX unit in its place and connecting the supplied cables to the motherboard and drives. The fixed cable lengths — 15-inch for SATA and large power, 14-inch for ATX and 12V, 6-inch for the remaining large and small power leads — may not reach all drive bays in larger chassis. The voltage selector must be set to match the local mains supply before powering on.

Highlights

  • Delivers 420W to power compatible HP Media Center desktops
  • Switchable 110V or 220V input suits different mains supplies
  • 80mm fan provides active cooling for the unit
  • Includes 20+24 pin ATX, 12V, SATA and multiple peripheral connectors
  • Direct replacement for listed HP models including m7557c m7560n m7560y CTO m7567c m7570kr m7570n

Specifications

BrandReplace Power
ModelRPSU-C99-21
ColorGrey
TypeATX
Fans1
Weight0.1

Questions about this item

Should I pick the 420W version or a different capacity?

This model is only offered as a 420W unit; choose it when your HP Media Center m7557c, m7560n, m7560y, CTO, m7567c, m7570kr or m7570n needs a direct ATX replacement.

What does the 420W rating actually deliver in my PC?

The 420W rating is the total continuous power the supply can provide across its 20+4 pin ATX, 12V ATX, SATA, Molex and small power connectors for the listed HP desktops.

Is the 20+4 pin ATX connector limited to 20-pin or 24-pin boards?

The 14-inch 20+4 pin ATX connector fits both 20-pin and 24-pin motherboards, so it works with either standard without an adapter.

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