Antec Solution Series is designed for the broadest spectrum of today's computer users and is our newest family of SmartPower power supplies, an onboard temperature sensor that regulates the fan speed so as the temperature rises the fan's RPM increases. SmartPower power supplies run as much as 40% cooler and 80% quieter than standard power supplies. SL350 is a 350 Watt 6-output, dual fan-cooled ATX (Baby AT or PS/2 Size) power supply designed for personal computer or industrial applications that use the most recent processing technology which requires +3.3V output, +5V AC-On Standby and Logic On/Off control