"The basic fan bus kit allows you to control up to four fans. Each switch has three settings: "ON", "OFF" and "Variable speed". The variable speed setting can be adjusted to whatever speed you prefer, making it perfect for fans up to 120mm. (we found that each fan had a minimum start voltage requirement). The lights are Red and Green and come with Black bezels. These baybuses have been tested with fans up to 120mm in size and with light kits. In order to ensure that you could attach ANY device to this we outfitted it to use bare wire leads. Printed circuit board eliminates wiring mess. Simple installation requires only drilling, then plug in and go. Drill template ensures holes are placed correctly. Long lead for power supply included, as well as extra molex connector so that you don't lose a power outlet. Control any device with the switches (up to 6W per switch)."
FULL STORY @ VIRTUALHIDEOUT (http://www.virtualhideout.net/reviews/pcmods_baybus/index.shtml)