This 430 watt atx power supply performs with whisper quiet operation. The unique atx connector on this power supply allows you to use it for both 20 pin and 24 pin atx connector configurations. The built in 20 pin to 24 pin adapter for your atx connector comes in handy. This power supply fully supports P4 and AMD CPUs. This power supply is out of stock, the 500 WPS will be sent out as a compatible replacement if you order this model.