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Silver ATX power supply unit with side fan grille and cable bundle

KHACHIMO

KHACHIMO H300EPS-00 300W ATX Power Supply

SKU CH-V35Q-QRA2N

300W ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support for fast wake times

  • TypeATX
  • Modern Standby support enables ultra-fast wake from sleep
  • 80 PLUS Gold certification delivers high efficiency and cooler operation
  • Zero RPM fan mode stops the fan at low loads for silent running
  • Resonant LLC topology with DC-to-DC conversion provides clean power and reduces coil whine
  • 300 W ATX output powers compatible Dell OptiPlex and Precision workstations

ATX 300W PSU for compatible desktops

This KHACHIMO ATX power supply delivers 300W of continuous power and suits systems that require a standard ATX form factor. It is built for Modern Standby environments, enabling extremely fast wake-from-sleep transitions and improved low-load efficiency. The unit carries 80 PLUS Gold certification, confirming high-efficiency operation that reduces power draw, noise and heat. It targets builders or technicians fitting compatible workstations or compact desktops.

Resonant LLC topology with DC-to-DC conversion

The platform uses Resonant LLC topology combined with DC-to-DC conversion to provide clean, consistent power and to reduce coil whine for quieter running. A Zero RPM fan mode stops the cooling fan entirely at low and medium loads, offering near-silent operation during typical workloads. The connector complement includes a 6-pin PCIe plug alongside the standard ATX and peripheral leads. Compatibility references list part numbers such as H300EPS-00, V2KRY, HU300EPS-00, HK400-82PP, 63HW7 and AC300EPS-00.

Verify connector needs and power budget

Before ordering, confirm that your motherboard and graphics card accept the provided 6-pin PCIe connector and that no additional power cables are required. Check that a 300W continuous rating meets the total system draw under full load. Ensure the case can accommodate a standard ATX power supply and that the cable lengths reach all components without strain. Buyers needing higher wattage or extra PCIe connectors should consider a different unit.

I korthet

  • Modern Standby support enables ultra-fast wake from sleep
  • 80 PLUS Gold certification delivers high efficiency and cooler operation
  • Zero RPM fan mode stops the fan at low loads for silent running
  • Resonant LLC topology with DC-to-DC conversion provides clean power and reduces coil whine
  • 300 W ATX output powers compatible Dell OptiPlex and Precision workstations

Specifikationer

TypeATX

Frågor om den här produkten

What ATX power standard does the 300 W unit support and what sleep states does it enable?

The PSU is ATX type and Modern Standby compatible, allowing extremely fast wake-from-sleep and more energy-efficient low-power states.

Which Dell or HP workstation chassis models does the H300EPS-00 fit?

It replaces Dell OptiPlex 7070, 7080, 7090 and 5090 power supplies, plus HP part numbers 3080, 3070, 63HW7, HK400-82PP, V2KRY, HU300EPS-00 and AC300EPS-00.

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

Remove the old PSU, slide the H300EPS-00 into the same ATX bay, secure with the original screws, then connect the 24-pin motherboard, 4/8-pin CPU and the 6-pin GPU power cables — forgetting the 6-pin connector is the common oversight.

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