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Rectangular silver ATX power supply with cooling fan visible

KHACHIMO

KHACHIMO UAP3300 275W power supply DPS-300NB A DPS-300NB B

SKU CH-SZF2-9S9JA

275W ATX unit with 80 PLUS Gold efficiency, Modern Standby support, Zero RPM fan mode and resonant LLC topology for quiet, efficient power delivery

  • TypeATX
  • Modern Standby support enables extremely fast wake-from-sleep times
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption
  • Zero RPM fan mode stops the 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
  • 275 W ATX power supply fits UAP3300 and DPS-300NB A/B replacements

What the KHACHIMO UAP3300 275W PSU Is

This KHACHIMO UAP3300 is a 275 watt ATX power supply built for small-form-factor or low-power desktops. It carries 80 PLUS Gold certification and uses a resonant LLC topology with DC-to-DC conversion for stable output. Modern Standby compatibility enables extremely fast wake-from-sleep times and better low-load efficiency.

Who This Suits and Who Should Look Elsewhere

Builders assembling compact office PCs or media centres that draw modest power will appreciate the Zero RPM fan mode for near-silent operation at low and medium loads. Systems requiring higher wattage for discrete graphics cards or multiple drives should consider a higher-capacity unit.

The Specification That Decides Fit

The 275 watt rated output is the single figure that determines whether this PSU can power your build; verify your total component draw stays within this limit before purchasing.

Highlights

  • Modern Standby support enables extremely fast wake-from-sleep times
  • 80 PLUS Gold certification delivers high efficiency for lower power consumption
  • Zero RPM fan mode stops the 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
  • 275 W ATX power supply fits UAP3300 and DPS-300NB A/B replacements

Specifications

TypeATX

Questions about this item

How do I install this ATX power supply and what 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 or the fast wake-from-sleep feature will not work.

What maintenance will this 275W supply need over time?

The Zero RPM fan mode keeps the fan off at low loads, reducing dust intake; clean the intake vents with compressed air once a year and replace the fan only if bearing noise appears.

Which limit appears first during sustained heavy loads on this Gold-rated unit?

The 275W continuous output ceiling is reached before thermal limits, so the protection circuit will shut the unit down if total draw exceeds that rating.

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