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Rectangular metal ATX power supply unit with matte black finish and rear fan grille

myVolts

myVolts Seasonic SS-400ET 400W 80 Plus Bronze ATX12V V2.2 power supply

SKU CH-K7KW-6TGVM

400 W ATX12V V2.2 PSU with 80 Plus Bronze efficiency for standard desktop builds

  • Product typeAT
  • Delivers 400W continuous power for stable system operation
  • 80 Plus Bronze certification reduces energy waste and heat
  • ATX12V V2.2 design fits standard desktop builds
  • Seasonic engineering ensures reliable voltage regulation
  • New condition guarantees full factory performance and authenticity

400 W ATX12V V2.2 power supply

This unit delivers 400 W of continuous power through the ATX12V V2.2 standard and meets 80 Plus Bronze efficiency requirements. It is suited for standard desktop builds that do not require high-wattage headroom.

Compatibility check before ordering

Verify that the original part number matches the SS-400ET exactly or confirm compatibility with the manufacturer. Ensure the system uses an AT-type power supply and that the motherboard accepts the ATX12V V2.2 connector layout.

Build integration

The supply occupies a standard ATX bay and provides the cabling defined by the ATX12V V2.2 specification. It frees the builder from sourcing legacy AT adapters while keeping cable routing straightforward for typical mid-tower cases.

How it compares

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

Price $171.99
Pricier than about 57% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeAT

Questions about this item

Does the Seasonic SS-400ET box include mounting screws and power cables?

The power supply is supplied as a standalone unit. Mounting screws and power cables are not included and must be sourced separately.

How does the 400W capacity relate to the 80 Plus Bronze rating?

The 400W figure is the maximum continuous output. The 80 Plus Bronze certification confirms at least 80% efficiency at typical loads, reducing waste heat.

What does the ATX12V V2.2 label mean for my motherboard?

ATX12V V2.2 indicates the unit provides a 24-pin main connector and the 12V rail distribution required by motherboards built to that specification.

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