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Red metal ATX power supply unit with 12cm fan and visible cable bundle

myVolts

myVolts ATX-400W 400W power supply

SKU CH-5RZP-YCZHM MPN ATX-400W

A 400W ATX power supply with manual 115/230V switching, automatic fan control, and a 1.1m power cord

  • TypeAT
  • Manual 115/230V input suits global mains
  • Thermal sensor auto-controls 12cm fan speed
  • Labelled connectors simplify motherboard and GPU wiring
  • 1m mains cable reaches wall sockets easily
  • 400W rated output with 100000-hour service life

Core purpose

The myVolts ATX-400W is a 400W AT form factor power supply built for basic desktop systems with low energy consumption. It targets office and home users who need a straightforward unit for standard computing tasks.

Practical limits

The unit relies on manual 115/230V switching and provides no active PFC, so it draws more apparent current from the mains than a PFC-equipped supply. Efficiency is rated above 80 percent. Connectors include a 20+4 pin motherboard plug, a 4+4 pin CPU plug, two fan headers and a single 6+2 pin video card interface, limiting GPU choices to models that require only one such connector.

Capacity and headroom

Rated at 400W, the supply handles typical office workloads and integrated graphics comfortably. It runs out of headroom when a discrete graphics card demands more than the single 6+2 pin connector can deliver or when total system draw approaches the 400W ceiling. Hold-up time exceeds 10ms and the thermal sensor adjusts the 12cm fan speed automatically to keep noise low under light loads.

Highlights

  • Manual 115/230V input suits global mains
  • Thermal sensor auto-controls 12cm fan speed
  • Labelled connectors simplify motherboard and GPU wiring
  • 1m mains cable reaches wall sockets easily
  • 400W rated output with 100000-hour service life

Specifications

TypeAT

Questions about this item

Which version or capacity of the myVolts ATX-400W should I choose?

The model is offered as a single 400 W unit with 115/230 V manual switching, a 12 cm fan, and a 1.1 m power cord.

What does the 400 W rating mean once the supply is installed in a real machine?

It indicates the maximum continuous power the unit can provide to the motherboard, CPU, drives and graphics card combined; the thermal sensor adjusts the 12 cm fan speed to keep noise low under typical loads.

What interface does the power supply use and what does that limit in practice?

It uses a standard ATX form factor with 20+4 pin motherboard, 4+4 pin CPU, 6+2 pin video card and two fan connectors, fitting most desktop cases that accept a 140 x 150 x 86 mm unit.

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