Akasa ak nbc laptop coolers 3962cm4318cm akasa ak nbc 02b this laptop cooler 4318cm 17in from akasa is an ultra quiet aluminium cooling pad offering a longer notebook service life along with better writing ergonomics an extra usb port can be used for other devices such as your notebook mouse while performance levels of 192 dba and 1800rpm mean the two integrated 7cm fans are whisper quiet and can even be switched off if necessary akasa ak nbc 02b laptop cooler 4318cm 17