Works Power 400w will be a great performer for mid to high end PCsystems and is highly reliable. Clean outputs yield great stability andenhance overall system performance. The Ultra Quiet 120mm Fan not onlygreatly reduces noise but it provides great cooling effect for thesystem and CPU even when no other system fans are installed. This 400wis also a great replacement or upgrade power supply that can fit intomany name brand systems. Most system boards that need 20/24-pin and P44-pin ATX power connectors will be able to work with this 400w.