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Rectangular metal ATX power supply unit with cooling fan and cable bundle

KHACHIMO

KHACHIMO ZKS-250A 250W ATX Power Supply 80 PLUS Gold

SKU CH-89G2-5EWRW

An 80 PLUS Gold certified 250W ATX power supply with zero-RPM fan mode and LLC resonant DC-to-DC topology for quiet, efficient Modern Standby support

  • Product typeATX
  • Fast wake-from-sleep with Modern Standby support
  • Lower power draw and cooler running via 80 PLUS Gold certification
  • Near-silent operation at low loads through Zero RPM fan mode
  • Clean, stable power delivery using Resonant LLC topology with DC-to-DC conversion
  • 250 W ATX power supply built for compatible ARBOR systems

Designed for ARBOR AT P8P9 systems

The KHACHIMO ZKS-250A is a 250W ATX power supply built specifically for ARBOR AT P8P9 platforms. It delivers 80 PLUS Gold certified efficiency and supports Modern Standby for rapid wake times. Resonant LLC topology with DC-to-DC conversion provides clean power and reduces coil whine. The zero RPM fan mode stops the fan at low and medium loads for silent running.

Ideal for compact ARBOR builds, not high-power PCs

This unit suits integrators and owners of ARBOR AT P8P9 systems needing a direct replacement or efficient low-power supply. It is not for builders assembling gaming rigs or workstations that require higher wattage or multiple PCIe power connectors. Buyers needing more than 250W of continuous power should look at higher-capacity units.

250W output defines the use case

The 250W rating is the single specification that determines compatibility. It supports only systems designed for this power envelope, such as the target ARBOR platforms. Exceeding this limit will cause instability or shutdown. Verify your system power budget before purchase.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $287.99
Pricier than about 76% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeATX

Questions about this item

Will this 250W ATX unit power an older motherboard that still uses a 20-pin main connector?

The supply follows the ATX form factor so it will physically fit, but the cable harness is not described; verify the connector style before installing.

How can I confirm the Zero RPM fan mode is actually engaging after I build the system?

With the PC idle, listen for the fan — if it stays completely still while temperatures remain low, the Zero RPM feature is working as intended.

Which cables come attached to the ZKS-250A and what must I source separately?

The product data lists only the 250W ATX unit itself; specific cables are not detailed, so check the package contents on arrival and obtain any missing leads separately.

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