TechAddicts posted a review on the GlacialPower GP-PS550BP 500 Watt Power Supply

Overall, the GlacialPower GP-PS550BP 550 Watt offers a great value. The intelligent fan controller keeps this power supply silent when doing non system intensive tasks and fairly quiet when under load. There is a lack of power connectors though. With only 2 Serial ATA and 5 Molex connectors, users are limited as to what peripherals they can add to their systems.

GlacialPower GP-PS550BP 500 Watt Power Supply Review