Item Type: Fan HubMaterial: PlasticModel: For FC-D012-P000Power Supply Voltage: 12V (10A)Power Input Interface: 4P Computer Power InterfaceOutput Fan Wiring Port: 3Pin 2510Power Indicator: LED IndicatorMounting Hole Diameter: Approx. 3mm / 0.1in, 4 HolesSize: Approx. 38.5mm / 1.5in, Approx. 44mm / 1.7in, Approx. 28mm / 1.1in, Approx. 33mm / 1.3inPurpose: Auxiliary Chassis Heat Dissipation