ATX 400W Switching Power Supply ST-400PAH — Replacement PSU

Replacement ATX switching power supply, model ST-400PAH, rated 400W. Designed for ATX desktop systems as a direct swap for a faulty or worn-out PSU. Delivers the specified 400W capacity in the ST-400PAH unit and fits standard ATX installations. Ideal when you need a straightforward power supply replacement for compatible PCs.