KHACHIMO 1U 300W ATX Power Supply P1S-5300V P1S-5180V P1S-5220V

Compact 1U ATX Power Supply

The KHACHIMO 1U 300W ATX power supply fits slim chassis that require a standard ATX connector layout in a reduced height. It delivers 300W of continuous power and carries 80 PLUS Gold certification for high efficiency across typical loads. Modern Standby compatibility allows extremely fast wake-from-sleep transitions and improved low-load efficiency. Resonant LLC topology with DC-to-DC conversion supplies clean, consistent power while reducing coil whine.

Suited for space-constrained builds.

This unit suits small-form-factor workstations, embedded appliances, or 1U servers that need quiet, efficient power within a tight vertical profile. The Zero RPM fan mode keeps acoustics near silent at low and medium loads. Builders planning multi-GPU configurations, high-wattage CPUs, or heavy peripheral counts should look at higher-capacity power supplies because the 300W limit will not support those demands.

Verify chassis height

Confirm the case or rackmount enclosure accepts a 1U form-factor power supply and provides the required ATX power connectors for your motherboard and drives. Ensure the total system power draw stays within the 300W rating to maintain stable operation. Check that the physical mounting holes and AC inlet orientation match the host chassis.