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Grey ATX power supply unit with single fan visible

Replace Power

Replace Power RPSU-C99-4 420W ATX power supply

SKU CH-AQ80-DJ7RV MPN RPSU-C99-4

A 420W ATX power supply with SATA, Molex and 20+4 pin connectors for compatible HP Pavilion desktops

  • Fan configuration1
  • Product colorGrey
  • Product typeATX
  • Product weight0.1
  • 420W output powers HP Pavilion desktops reliably
  • Single fan cools the unit during operation
  • 20+4 pin ATX connector fits 20-pin and 24-pin motherboards
  • 12V ATX connector supplies dedicated CPU power
  • 15-inch SATA cable reaches internal drives easily

Replacement PSU for HP Pavilion

This Replace Power RPSU-C99-4 is a 420W ATX power supply designed as a direct replacement for specific HP Pavilion desktops. It fits models including the a1730n, a1737c, a1744x, a1719n, a6712f and a700y CTO. The grey unit uses a single fan for cooling. It targets owners restoring or upgrading these legacy systems.

420W output with 20+4 pin connector

The single specification that decides compatibility is the 420W rating combined with a 14-inch 20+4 pin ATX motherboard connector supporting both 20-pin and 24-pin configurations. A 14-inch 12V ATX connector is also included. Without this exact connector layout and wattage the unit will not power the target motherboards.

Connectors for legacy peripherals

The supply provides one 15-inch SATA connector, two 15-inch large peripheral connectors and a floppy connector alongside the motherboard cables. It frees builders from hunting adapters for older drives and add-in cards. The 0.1 weight keeps chassis stress low. It needs a standard ATX case opening and mains input to operate.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $56.99
Cheaper than about 87% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Brand nameReplace Power
Model nameRPSU-C99-4
Product colorGrey
Product typeATX
More details
Fan configuration1

Questions about this item

What does the 420W rating actually deliver in a working HP Pavilion desktop?

It supplies up to 420 watts to the motherboard, drives and peripherals so the system runs stable under normal office or home workloads.

Which ATX connector versions does the 20+4 pin plug support?

The 14‑inch 20+4 pin cable fits both 20‑pin and 24‑pin motherboard sockets without an adapter.

What clearance and mounting points does the grey ATX unit need inside the case?

Standard ATX screw pattern and a single fan vent; the 0.1 kg chassis slides into any regular ATX bay.

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