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Compact silver 1U power supply unit with rear fan grille and modular cable sockets

KHACHIMO

KHACHIMO 1U 280W power supply DPS-280AB-4B

SKU CH-EYVT-9RWER

A 280 W ATX power supply with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby compatibility for fast, quiet wake-up

  • TypeATX
  • Modern Standby support for near-instant wake and efficient sleep
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Zero RPM fan mode stops the fan at low loads
  • Resonant LLC with DC-to-DC delivers clean power and less coil whine
  • 280 W ATX output fits 1U server and workstation chassis

Compact 1U form factor

The KHACHIMO DPS-280AB-4B is a 280W ATX power supply built to the 1U height standard for rackmount and small-form-factor chassis. It targets system integrators and IT managers who need reliable power density in space-constrained servers or workstations. The unit carries an 80 PLUS Gold efficiency rating and supports Modern Standby for rapid wake-from-sleep transitions.

280W continuous ceiling

The 280W rating sets a firm limit on total system draw; high-core-count CPUs paired with discrete GPUs will exceed this budget. ATX connector layout follows the standard pin-out, but the modest wattage restricts the number of peripheral and PCIe power cables that can be supplied simultaneously. Modern Standby compatibility requires a motherboard and firmware that implement the S0ix sleep states; older platforms will not benefit from the faster wake times or improved low-load efficiency.

Slide-in installation

The 1U profile slides into compatible rack rails or SFF brackets and secures with four standard screws; no special tools are needed. Cable routing can be tight in shallow enclosures, so plan the ATX 24-pin and CPU 4/8-pin paths before final mounting. Zero RPM fan mode engages automatically at low and medium loads, but dust accumulation in the intake mesh can reduce airflow and trigger higher fan speeds sooner than expected.

Points forts

  • Modern Standby support for near-instant wake and efficient sleep
  • 80 PLUS Gold efficiency cuts power draw and heat
  • Zero RPM fan mode stops the fan at low loads
  • Resonant LLC with DC-to-DC delivers clean power and less coil whine
  • 280 W ATX output fits 1U server and workstation chassis

Caractéristiques

TypeATX

Questions sur cet article

Which 1U 280 W version should I choose between the DPS-280AB-4B and DPS-280AB-4A?

The DPS-280AB-4B and DPS-280AB-4A are the same 1U 280 W unit with identical specifications; the suffix letter only reflects a supplier revision code, so either will fit the same chassis.

What does the 280 W rating mean once the unit is installed in a real machine?

The 280 W figure is the maximum continuous DC output the supply can deliver across all rails combined while maintaining 80 PLUS Gold efficiency and staying within thermal limits.

What interface does the ATX power supply use and what does it cap in practice?

The unit uses the standard ATX connector set, which limits use to motherboards and chassis designed for the ATX form-factor and pin-out.

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