SCYTHE KM01-BK Kaze Master 5.25" Drive Bay Fan Controller Dimension (W x H x D): 148.5 x 42.5 x 63 mm Display Dimension: 114 x 20 mm DC Input: 5V or 12V (From PC Power Supply) Fan Adjustment Range: 3.7V (+/-10%) - 12V (+/-10%) Maximum Fan Ampere per Channel: 1A per channel Fan Speed Range: 0 - 7500 rpm (Display Range: 30rpm Incremental)