"As part of the Black Box PSU Mod we wanted to increase airflow from the inside of the computer case and out through the powersupply. To this end, and to improve the overall look of a dull grey powersupply we came up with a series of practical modifications to create the " Black Box Power Supply." The real goal here really was to improve the airflow of the powersupply which already had really good low noise characteristics and is pretty stealthy by itself. In doing this "upgrade" we also wanted to give the ST300BLP a more stylish look... and I think we achieved both points rather well."
FULL STORY @ FROSTYTECH (http://www.frostytech.com/articleview.cfm?articleID=1192)