KHACHIMO H300EPS-00 300W ATX Power Supply

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.