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Seasonic X Series 400W Fanless Power Supply Review

Author: Lee Garbutt
Manufacturer: Seasonic

Specifications and Packaging

The Seasonic X Series 400W Fanless power supply is rated for a combined, continuous output power of up to 400 watts.  It comes with all modular cables that includes one 6/8-pin PCI-E connector. The PSU uses universal AC line input (automatically adjusts to the AC line voltage) and active PFC, which makes the unit more environmentally friendly to the local power grid.  The X-400W PSU features a single +12V rail that can deliver up to 33A (396W) of power; almost the entire capacity of the unit. 

Specifications from the Seasonic X Series 400W Fanless PSU box:

Packaging and Parts

The Seasonic X Series 400W Fanless power supply comes securely packed inside a retail box that highlights the unit's main features and specifications.  The power supply itself is enclosed in a black velvet bag with a gold Seasonic logo.  In addition to the power supply the package includes a power cord, mounting screws, modular cables, Seasonic case badge, and a multi-language X Series Owner's Manual.

The eight modular cables come neatly packed inside a black nylon storage pouch.