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Grey ATX power supply unit with single fan and built-in cables

Replace Power

Replace Power Dell MH495 MK9GY NH493 NK595 P192M PH333 power supply

SKU CH-C9V0-CCMXJ

A compact ATX power supply rated at 280 watts continuous and 420 watts peak, with reduced depth for broad compatibility and an 80 mm fan for quiet cooling

  • Fan configuration1
  • Product colorGrey
  • Product typeATX
  • Product weight4
  • Reduced depth fits tight Dell chassis
  • 280 W continuous power for stable operation
  • 420 W peak capacity handles load spikes
  • Low ripple and noise protects components
  • 24-pin, SATA, Molex and 4-pin CPU connectors included

Replacement Power Supply for Dell Systems

This unit replaces the original power supply in Dell desktops using part numbers MH495 MK9GY NH493 NK595 P192M PH333. It delivers a total continuous output of 280 Watts with a peak rating of 420 Watts. The ATX form factor fits a standard mounting pattern while the reduced depth improves clearance inside compact chassis.

Reduced Depth ATX Design with Fixed Cabling

The grey enclosure measures 5.86 inches by 3.3 inches and uses an 80mm fan for airflow. A single 24-pin connector splits as 20+4 for motherboard compatibility and a 4-pin CPU power lead is included. Three SATA 15-pin connectors, two Molex 4-pin connectors and one floppy 4-pin connector are permanently attached to the unit.

Low Ripple and Noise with Universal AC Input

The power supply accepts 110 or 220 Volts at 47 to 63 Hertz for worldwide mains compatibility. Output rails provide +3.3V, +5V, -5V, +12V1, +12V2, -12V and +5V standby voltages. Hold-up time is at least 17 milliseconds at nominal input and rise time stays below 70 milliseconds. Hi-Pot testing, ROHS and CE marks confirm baseline safety compliance.

How it compares

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

Price $55.99
Cheaper than about 88% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Brand nameReplace Power
Model nameDell MH495 MK9GY NH493 NK595 P192M PH333
Product colorGrey
Product typeATX
More details
Fan configuration1

Questions about this item

What does the 24 (20+4) pin ATX connector cap in practice?

The 24 (20+4) pin ATX connector supplies the motherboard with +3.3V, +5V, +12V1, +12V2, -12V and +5V-SB rails up to the unit's 280 W total rating.

What clearance does the 5.86" depth need to fit?

The reduced 5.86" depth fits standard ATX bays and leaves extra room behind the tray for cable routing in compact Dell, HP or Compaq chassis.

How is the unit installed and which step is often missed?

Mount the PSU with four screws, plug the 24-pin and 4-pin CPU leads, connect three SATA, two Molex and one floppy drive connector, then switch the 110/220 V selector to match local mains before powering on.

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