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Rectangular ATX power supply unit with matte black metal casing and cooling fan grille

KHACHIMO

KHACHIMO 3020 7020 9020 T7100 255W ATX Power Supply

SKU CH-ZEXJ-Z92DZ

An ATX 255 W unit with 80 PLUS Gold efficiency, Modern Standby support, Zero RPM fan mode and resonant LLC topology with DC-to-DC conversion

  • TypeATX
  • Modern Standby compatible for fast wake-from-sleep
  • 80 PLUS Gold efficiency lowers power draw and heat
  • Zero RPM fan mode stops the fan at low loads
  • Resonant LLC with DC-to-DC gives clean, stable power
  • 255 W ATX output fits 3020, 7020, 9020, T7100 systems

Compatible systems

The KHACHIMO 255W ATX unit fits Dell 3020, 7020, 9020 and T7100 desktops. It replaces part numbers L255AS-00, D255AS-00, H255AS-00, H255ES-01, F255ES-00 and HU255AS-00. The supply is new and built to the original form factor.

Modern Standby and efficiency

80 PLUS Gold certification reduces waste heat and lowers running costs. Modern Standby compatibility enables extremely fast wake-from-sleep times. Resonant LLC topology with DC-to-DC conversion delivers clean power and cuts coil whine.

Zero RPM fan and pre-install checks

At low and medium loads the fan stops completely for near-silent operation. Verify the Dell model number and the exact part number on the old unit before ordering. Confirm the 255W rating matches the system's original specification. Ensure the ATX connector layout matches the motherboard.

Puntos fuertes

  • Modern Standby compatible for fast wake-from-sleep
  • 80 PLUS Gold efficiency lowers power draw and heat
  • Zero RPM fan mode stops the fan at low loads
  • Resonant LLC with DC-to-DC gives clean, stable power
  • 255 W ATX output fits 3020, 7020, 9020, T7100 systems

Especificaciones

TypeATX

Preguntas sobre este artículo

Will this 255W ATX unit fit the standard mounting holes in a Dell OptiPlex 3020, 7020 or 9020 chassis?

Yes — the supply follows the ATX form factor and matches the Dell part numbers L255AS-00, D255AS-00, H255AS-00, H255ES-01, F255ES-00 and HU255AS-00 used in the 3020, 7020, 9020 and T7100 models.

What is the correct way to connect the main power and CPU cables during installation, and which step is most often missed?

Seat the 24-pin ATX connector fully until the latch clicks, then attach the 4-pin CPU power plug; the step most often missed is pressing the CPU connector in until its own latch engages, leaving the board without processor power.

How often should the internal fan be cleaned to keep the zero-RPM mode working reliably?

Blow dust from the fan and heatsink fins every six to twelve months; a clogged fan prevents the zero-RPM mode from engaging at low and medium loads.

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