KHACHIMO 1U 400W ATX Power Supply DPS-400BB A

KHACHIMO 1U 400W ATX Power Supply

The KHACHIMO DPS-400BB A is a 1U form-factor ATX power supply rated at 400W. It targets system integrators and builders assembling compact servers, rackmount appliances or space-constrained workstations where a slim profile is mandatory. Its Modern Standby compatibility makes it suitable for deployments that demand rapid wake-from-sleep responsiveness. Buyers needing higher wattage for multi-GPU configurations or full-size ATX chassis should look elsewhere.

Build quality and connector implications

The unit carries 80 PLUS Gold certification, indicating high efficiency across typical load ranges and reduced waste heat inside tight enclosures. A resonant LLC topology with DC-to-DC conversion delivers clean, consistent power while minimising coil whine. These design choices support reliable operation in dense racks where airflow is limited and acoustic intrusion must be kept low. The 1U height dictates compatibility only with cases and mounting rails designed for that specific form factor.

Thermals, noise and power draw

Zero RPM fan mode stops the cooling fan entirely at low and medium loads, providing near-silent operation during idle or light workloads. When the fan does engage, the high-efficiency Gold-rated platform keeps internal temperatures lower, allowing slower fan speeds than less efficient units. The combination of efficient topology and intelligent fan control results in cooler running temperatures and reduced acoustic output under normal operating conditions.