17 inch laptop cooler max fans 2 fan dimensions 80 x 80 mm fan height 10 special feature adjustable fans max fan revolution 2 000 rpm min fan speed 2 000 max noise emission 21 db min noise emission 21 weight 065 kg materials metal plastic rubber aluminium connections 1 x usb 20 colour black series coolermaster notepal power supply usb nominal voltage 5 v nominal current 036 a operating power input 18 watt volume flow 5267 mh w