ThinkComputers.org posted a review on the SilverStone Element ST50EF-Plus 500W Power Supply

SilverStone Technology was founded in the summer of 2003 and originally designed aluminum enclosures. Today Silverstone manufactures computer cases, electronic enclosures, computer power supplies, CPU coolers, computer fans, and metal alloy accessories, and are regarded as creating the most beautiful and astatically pleasing products on the market. Their power supplies have also been considered to be a must have for higher end systems.

SilverStone Element ST50EF-Plus 500W Power Supply Review