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Standard ATX power supply unit in black metal housing

KHACHIMO

KHACHIMO Power Supply For SD-3400U 400W ATX

SKU CH-N7NX-HRNN0

Replacement ATX power supply rated at 400 watts for the SD-3400U, tested working and new

  • TypeATX
  • 400W ATX output powers the SD-3400U reliably
  • Unit tested working before shipment ensures function
  • Good-quality components support stable system operation
  • New condition guarantees full rated performance
  • Listed April 11 2024 confirms current design

Targeted Replacement

This 400 W ATX power supply is built specifically for the SD-3400U chassis. It serves technicians and owners who need a direct, tested replacement for the original unit. The new condition guarantees full rated output without prior wear.

Verified Reliability

Each unit is test working before it leaves the factory, confirming stable voltage delivery under load. Good-quality components reduce the risk of early failure compared with untested alternatives. This validation step is the practical difference for a maintenance install.

Wattage Fit

The 400 W rating is the single figure that decides compatibility. If the SD-3400U system draws more than this supply can deliver, the machine will not run stably. Buyers who need higher continuous power for upgraded components must select a different unit.

Highlights

  • 400W ATX output powers the SD-3400U reliably
  • Unit tested working before shipment ensures function
  • Good-quality components support stable system operation
  • New condition guarantees full rated performance
  • Listed April 11 2024 confirms current design

Specifications

TypeATX

Questions about this item

Will the fan or capacitors need replacement after a few years of daily use?

The unit is tested working and built with good-quality components to support long-term operation in the SD-3400U chassis

What limits continuous output before the protection circuit engages?

The 400 W rating is the sustained ceiling; exceeding it will trigger the built-in safety shutdown

How loud and hot does the supply get when the system runs all day?

The ATX form factor fits the SD-3400U airflow path, and the supply is tested working under normal load conditions

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