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Rectangular ATX power supply unit in matte black metal housing with rear fan grille and side label

KHACHIMO

KHACHIMO 2498-B80 2005-B64 300W power supply

SKU CH-0YED-T2836

ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support for DCJ3001-02P and 60-0300031-02 systems

  • TypeATX
  • Modern Standby compatibility for extremely fast wake-from-sleep times
  • 80 PLUS Gold certification for lower power consumption and cooler operation
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent running
  • Resonant LLC topology with DC-to-DC conversion delivers clean, consistent power and reduces coil whine
  • ATX form factor fits standard desktop chassis

Compatible Replacement for Specific Models

This 300W ATX power supply is built as a direct replacement for units identified by the 2498-B80, 2005-B64 and DCJ3001-02P part numbers. It serves system integrators and repair technicians who need an exact match for proprietary or OEM chassis. Builders assembling custom ATX systems from standard parts should verify connector requirements before choosing this unit.

Thermals Noise and Power Efficiency

The 80 PLUS Gold certification ensures high efficiency during normal operation, reducing waste heat and lowering overall power draw. A Zero RPM fan mode stops the cooling fan completely at low and medium loads, delivering near-silent performance for everyday tasks. Resonant LLC topology with DC-to-DC conversion supplies clean, consistent power while further reducing coil whine and enabling efficient sleep states.

Modern Standby and Topology Benefits

Modern Standby compatibility allows extremely fast wake-from-sleep times and improves low-load efficiency for connected standby scenarios. The resonant LLC and DC-to-DC design minimises electrical noise and supports deeper, more energy-efficient sleep states without voltage instability. Systems lacking Modern Standby firmware support or requiring higher wattage for discrete graphics will not gain these advantages.

Highlights

  • Modern Standby compatibility for extremely fast wake-from-sleep times
  • 80 PLUS Gold certification for lower power consumption and cooler operation
  • Zero RPM fan mode stops the fan at low and medium loads for near-silent running
  • Resonant LLC topology with DC-to-DC conversion delivers clean, consistent power and reduces coil whine
  • ATX form factor fits standard desktop chassis

Specifications

TypeATX

Questions about this item

How do I install this ATX power supply and which step is often missed?

Mount the unit in the case with four screws, connect the 24-pin ATX and CPU power cables, then enable Modern Standby in the BIOS so the fast wake-from-sleep feature actually works.

What maintenance will this 300W supply need over time?

The Zero RPM fan mode keeps the fan off at low loads, reducing dust intake; simply blow compressed air through the grille once a year to clear any buildup.

What limit appears first when this Gold-rated unit runs under sustained load?

The 300W maximum output is the hard ceiling; exceeding it triggers over-power protection and shuts the system down.

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