RigelSomething like this?
http://www.discountofficeitems.com/technology/power-backup/power-equipment-supplies/power-adapters/power-splitter-cable/p122474.html?ref=pla&source=pla&utm_medium=shopping_engine&utm_source=pla&gclid=CN2aruH4rLYCFVGf4AodX3cABg
Here's a more expensive splitter that comes with some things you might like:
http://www.acousticpc.com/zalman_zmfc2_fan_controller.html
http://www.circotech.com/logisys-fp201-fan-master-4-fan-controller.html?gclid=COPppsX5rLYCFe1lOgod90gAVw
this is exactly what i needed, thanks!