A.C.Ryan - Blackfire Fans / Fan Grills
 

All of the fans are made from UV reactive Acrylic and have 4 UV LED to
light up the fans. One of the features of these fans are that they can
be used without having to power the UV LEDs. This configuration means
that there are two power rails coming off the fans; one to power the
fans and a small pig tail which connects to the LED rail to save you
from having to use an additional molex.