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Rectangular silver ATX power supply unit with rear fan grille and side label

KHACHIMO

KHACHIMO 280W ATX Power Supply 600 680 705 800 G1 G2 MT DPS-280AB-5A

SKU CH-FTY4-VKC7M

A 280 W ATX power supply compatible with Modern Standby, 80 PLUS Gold certified and featuring a Zero RPM fan mode for silent low-load operation

  • TypeATX
  • Faster wake from sleep with Modern Standby support
  • Lower electricity draw from 80 PLUS Gold efficiency
  • Silent running at low loads via Zero RPM fan mode
  • Cleaner power delivery using resonant LLC with DC-to-DC
  • Compatible with HP 600 680 705 800 G1 G2 MT systems

Compatible 280W ATX Power Supply

This KHACHIMO 280W ATX power supply fits HP 600, 680, 705 and 800 G1 and G2 Microtower chassis. It replaces part numbers DPS-280AB-5A, 796347-001 and 796417-001 for direct installation. Builders repairing or upgrading those specific office systems will find the correct pinout and form factor. Systems outside this model list are not supported.

80 PLUS Gold and Zero RPM Fan Mode

Gold-rated efficiency reduces power draw, heat output and fan speed requirements across the load range. The Zero RPM mode stops the fan completely at low and medium loads for silent running. Modern Standby compatibility enables faster wake times and deeper sleep states. Resonant LLC topology with DC-to-DC conversion delivers stable voltages and lowers coil whine.

Fixed 280W Output Limit

The unit provides a maximum of 280 watts, so configurations with high-power discrete graphics cards or many drives may exceed its capacity. ATX connectors are pre-wired for the listed HP platforms; adapters are not included. Buyers needing higher wattage or standard ATX pinouts for custom builds must choose a different power supply.

Highlights

  • Faster wake from sleep with Modern Standby support
  • Lower electricity draw from 80 PLUS Gold efficiency
  • Silent running at low loads via Zero RPM fan mode
  • Cleaner power delivery using resonant LLC with DC-to-DC
  • Compatible with HP 600 680 705 800 G1 G2 MT systems

Specifications

TypeATX

Questions about this item

Does the DPS-280AB-5A fan need periodic cleaning or replacement?

The Zero RPM Fan Mode stops the fan at low and medium loads, reducing dust build-up and wear, so cleaning intervals are longer than on always-spinning designs.

Which protection triggers first when the 280 W unit runs at full load continuously?

Over-temperature protection will engage before the 80 PLUS Gold efficiency curve drops, shutting the supply down to prevent component damage.

How loud and hot does the PSU get during an all-day workload?

At low and medium loads the fan stays off for near-silent operation; at higher loads the 80 PLUS Gold efficiency keeps temperatures lower and the fan quieter than non-certified units.

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