Akasa ak cbfa04 15 pwm fan splitter akasa ak cbfa04 15 p align left this pwm fan splitter from akasa has been designed so that two pwm fans can be operated at one 4 pin blower connection the pwm technology power wide modulation adapts the required cooling capacity to the computer performance speed and associated background noise of all connected fans additional fan cases will always be regulated to the optimum level p akasa ak cbfa04 15 pwm fan splitter