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KHACHIMO 250W ATX power supply unit in black metal housing with cooling fan

KHACHIMO

KHACHIMO 250W ATX Power Supply YM-2511D

SKU CH-S99Q-545V0

A 250 W ATX power supply with 80 PLUS Gold efficiency, Modern Standby support, Zero RPM fan mode and LLC resonant topology with DC-to-DC conversion

  • TypeATX
  • Modern Standby compatibility enables extremely fast wake-from-sleep and better low-load efficiency
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption, less noise and cooler temperatures
  • Zero RPM fan mode stops the cooling fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • ATX form factor fits standard cases for straightforward installation

Compact 250W ATX Unit

The KHACHIMO YM-2511D is a 250 watt ATX power supply built for modern standby compatibility. It suits small form factor PCs, office workstations and low-power upgrades where space and efficiency matter more than raw output.

Ideal for Efficient Low-Power Builds

This unit fits systems that prioritise quiet operation and fast sleep wake times over high-wattage headroom. It is not for gaming rigs, workstations with discrete graphics cards or any build that needs more than 250 watts of continuous power.

80 PLUS Gold Efficiency with 250W Headroom

The 80 PLUS Gold rating keeps consumption and heat low across typical loads, while the Zero RPM fan mode stays silent until the unit requires active cooling. Resonant LLC topology with DC-to-DC conversion delivers stable voltages for modern sleep states, but the 250 watt ceiling limits use to entry-level hardware.

Helstu kostir

  • Modern Standby compatibility enables extremely fast wake-from-sleep and better low-load efficiency
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption, less noise and cooler temperatures
  • Zero RPM fan mode stops the cooling fan at low and medium loads for near-silent operation
  • Resonant LLC topology with DC-to-DC conversion provides clean, consistent power and reduces coil whine
  • ATX form factor fits standard cases for straightforward installation

Tæknilýsing

TypeATX

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What motherboard power connectors must my board provide for this 250W ATX unit?

The power supply uses the standard ATX form factor, so your motherboard needs a 24-pin main power connector and a 4-pin or 8-pin CPU power connector to operate.

Will the 80 PLUS Gold efficiency and Zero RPM fan mode still benefit a system built around older components?

Yes, the high efficiency lowers waste heat and the fan stays off at low and medium loads regardless of the age of the other parts, giving quieter operation and cooler case temperatures.

How can I confirm Modern Standby is functioning after I install the YM-2511D?

Put the PC to sleep; if it wakes almost instantly and the fan remains off during light background tasks, the low-load efficiency and fast wake behaviour are working as intended.

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