The Arctic NC offers quiet cooling and portability for your laptop. The Arctic NC can fit any 12" to 19" laptop. The NC is constructed from polycarbonate, which makes it extremely durable and light. It comes loaded with two 60mm fans with PWM function for high performance and quiet operation. Arctic also included a 4 port USB hub on the NC to expand your laptop's capability. The Arctic NC is USB powered and compact, making it a perfect travel accessory for your laptop.