17 inch laptop cooler max fans 1 fan dimensions 230 x 230 mm fan height 16 features cable management properties tiltable max fan revolution 800 rpm min fan speed 500 max noise emission 21 db weight 121 kg materials metal fabric plastic connections 4 x usb 20 colour black series coolermaster notepal power supply usb nominal voltage 5 v width 385 cm height 47 cm depth 28 cm