Hardware Secrets posted a review on the Seventeam ST-550P-AG Power Supply
A quote from the article:
>> Seventeam ST-550P-AG Power Supply Review
ST-550P-AG is an entry-level 550 W power supply from Seventeam, featuring active PFC, a 120-mm fan and only two SATA power connectors. Let's see if this unit can really deliver 550 W and whether it is a good product or not.
>> Seventeam ST-550P-AG Power Supply Review