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
Rectangular 1U power supply unit with metal casing and rear fan grille

KHACHIMO

KHACHIMO PSU for FSP 1U -5V 300W 350W 601U 601UA power supply

SKU CH-PMQS-WZPS0

Replacement ATX power supply for FSP 1U units rated at 300 W or 350 W, 80 PLUS Gold certified with Modern Standby, Zero RPM fan mode and LLC resonant topology

  • TypeATX
  • Fast wake-from-sleep with Modern Standby support
  • High efficiency cuts power draw and heat with 80 PLUS Gold
  • Silent operation at low loads via Zero RPM fan mode
  • Clean, stable power delivery using Resonant LLC with DC-to-DC
  • Fits FSP 1U units rated 300W and 350W

Replacement PSU for 1U FSP Units

This power supply replaces the FSP300-601U and FSP350-601UA models in 1U server chassis. It delivers ATX-standard output with a modern standby implementation for rapid wake-from-sleep response. The unit is brand new and built for systems that require the specific -5V rail found in these legacy platforms. It targets administrators maintaining existing rack infrastructure rather than new builds.

Capacity and headroom for 300W and 350W loads

Rated outputs of 300W and 350W cover the original specifications for the supported FSP models. The 80 PLUS Gold certification ensures high efficiency across typical server workloads, reducing waste heat and fan activity. Headroom exists for standard configured systems, but heavily expanded drive arrays or add-in cards may exceed the rated ceiling. Builders needing more than 350W of continuous DC power must select a different form factor.

LLC resonant topology with DC-to-DC conversion

The resonant LLC primary stage combined with DC-to-DC secondary regulation provides tight voltage regulation and low ripple. This topology also enables the zero-RPM fan mode at low and medium loads for near-silent operation. It is the defining electrical characteristic that determines compatibility with the target FSP platforms. Systems requiring a different internal architecture will not match this design.

Highlights

  • Fast wake-from-sleep with Modern Standby support
  • High efficiency cuts power draw and heat with 80 PLUS Gold
  • Silent operation at low loads via Zero RPM fan mode
  • Clean, stable power delivery using Resonant LLC with DC-to-DC
  • Fits FSP 1U units rated 300W and 350W

Specifications

TypeATX

Questions about this item

Will this 300W or 350W unit fit the same 1U slot as my existing FSP300-601U?

The supply is built for FSP 1U chassis using the 601U and 601UA form factor, so it occupies the same slot as the original FSP300-601U.

How can I confirm the 80 PLUS Gold efficiency and Modern Standby support are active after installation?

In the UEFI enable Modern Standby, then verify the PSU fan stays off at idle and check software power reports for Gold-level efficiency at typical loads.

Does the box include the -5 V rail wiring and mounting screws, or must I source them separately?

The unit is a direct replacement for FSP 1U -5V models and ships ready to install; no extra cables or screws are required for a standard 1U bay.

Also in this aisle

People compared these

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