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Rectangular metal ATX power supply unit with single cooling fan visible on rear grille

Replace Power

Replace Power RPSU-0950-2700 420W ATX power supply

SKU CH-DW5X-J5SQN MPN RPSU-0950-2700

A 420W ATX replacement unit with reduced depth, a 20+4 pin adapter and multiple protection circuits for legacy HP and Compaq systems

  • TypeATX
  • Fans1
  • Weight1.5
  • 420 W output supports legacy HP Compaq systems
  • 20+4 pin ATX connector fits 20 and 24 pin boards
  • Reduced 5.9 inch depth eases tight case installs
  • Over current, over power, over voltage and short circuit protection
  • 110-260 V AC switchable input works worldwide

Replacement ATX Power Supply

This 420 watt ATX unit replaces several older HP, Compaq and eMachine power supplies including part numbers 0950-2700, 0950-3971 and 0950-3975. It is intended for owners of legacy desktops who need a direct swap without modifying the case or wiring.

Reduced Depth and Universal Connectors

A built-in 20+4 pin adapter supports both 24 and 20 pin motherboards while the shorter depth increases compatibility with compact chassis. The supply also provides one P4 12V 4-pin, three SATA 15-pin, three LP4 4-pin and one floppy 4-pin connector for drives and peripherals.

Upgrade from 250W or 300W Legacy Units

The jump is worth it when the original 250 watt or 300 watt unit can no longer sustain the system or lacks the connectors needed for additional drives. Over current, over power, over voltage and short circuit protection help safeguard components during the upgrade.

Highlights

  • 420 W output supports legacy HP Compaq systems
  • 20+4 pin ATX connector fits 20 and 24 pin boards
  • Reduced 5.9 inch depth eases tight case installs
  • Over current, over power, over voltage and short circuit protection
  • 110-260 V AC switchable input works worldwide

Specifications

BrandReplace Power
ModelRPSU-0950-2700
TypeATX
Fans1
Weight1.5

Questions about this item

How much +12 V current does the RPSU-0950-2700 deliver before hitting its limit?

Each +12 V rail is rated at 8 A, so sustained loads above that on either rail will trip the over-current protection.

What noise and heat should I expect when this unit runs continuously at full load?

A single fan cools the supply; at 50 °C ambient on full load the fan will run at higher speed, producing noticeable airflow noise.

Which motherboard power connectors must my system already have for this supply to work?

Your board needs a 20- or 24-pin ATX socket and a 4-pin P4 12 V connector; the supply also provides three SATA, three LP4 and one floppy plug for drives.

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