6 channels PC case internal fan speed controller Each fan can be turned off , speed adjusted range 0%~100% full speed Support 3pin and 4pin fan speed controller by voltage adjusted 12V3A max. each channle,support total 120Watt.(12V/10A)output Power by Molex 4Pin or DC12V(5.5x2.1 /5.5x2.5 DC headers) Adhesive tape at the back lets you mount the controller at a convenient place inside the chassis