We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Compact 1U ATX power supply unit with matte metal casing and rear fan grille

KHACHIMO

KHACHIMO 1U 300W ATX Switching Power Supply API3FS01

SKU CH-KP7W-MKSJX

A 1U ATX unit delivering 300W with 80 PLUS Gold efficiency, Modern Standby support, zero-RPM fan mode and LLC resonant topology for clean, quiet power

  • TypeATX
  • Modern Standby compatible for fast wake-from-sleep
  • 80 PLUS Gold certified for lower power consumption and cooler running
  • Zero RPM fan mode stops the fan at low and medium loads
  • Resonant LLC topology with DC-to-DC conversion delivers clean, consistent power
  • 300 W ATX output in a 1U form factor

1U 300W ATX power supply for compact builds

This KHACHIMO unit fits 1U rack or slim-tower chassis and delivers 300W of continuous ATX power. It is built for system integrators and home-lab builders who need reliable, efficient power in a space-constrained enclosure.

Upgrade from older low-efficiency or noisy 1U units

The 80 PLUS Gold certification and resonant LLC topology with DC-to-DC conversion replace legacy group-regulated designs that waste energy and produce coil whine. The jump is worth it when you need Modern Standby support for near-instant wake times and want the fan to stay off during light workloads.

Limited by 300W ceiling and fixed 1U form factor

The 300W rating restricts use to low-power CPUs and configurations without discrete graphics cards. The 1U height prevents installation in standard ATX towers, and the fixed cable layout offers no modularity for cable routing in tight spaces.

Highlights

  • Modern Standby compatible for fast wake-from-sleep
  • 80 PLUS Gold certified for lower power consumption and cooler running
  • Zero RPM fan mode stops the fan at low and medium loads
  • Resonant LLC topology with DC-to-DC conversion delivers clean, consistent power
  • 300 W ATX output in a 1U form factor

Specifications

TypeATX

Questions about this item

What clearance does the 1U form factor need in my chassis?

The 1U height requires a rack or server case with a 1U power supply bay and enough depth for the ATX-length body.

Which ATX power connectors must be seated for the 300W unit to start?

Connect the 24-pin motherboard plug and the 4-pin or 8-pin CPU power cable firmly; the PSU will not power on if either is loose.

How do I clean the fan on this 80 PLUS Gold supply without voiding its new condition?

Power off, unplug, then use short bursts of compressed air through the grille while holding the fan blades still.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.