The best cooler to ease heat dissipation in laptops, rapidly reduce both surface and internal temperature by 18 to 50 F degrees in minutes which is far better than cooling pads.nDesigned for laptops with air vents on both sides or rear, ideal for gaming laptops or systems that tax the CPU. Not recommended for macbook or other ultrathin notebooks thinner than 0.4inch.nAutomatic and manual adjustment modes with 13 speeds to manage the airflow and noise; quiet operation in auto mode and max. noise is less than 60dbm.nTwo-way Installation: Quick installation provides a easy mounting solution, just plug and play; 3M fixing glue with patented clamping arms, keeps the cooler firmly attached to laptop when moving.nOne Year Replacement Guarantee for product defects and 30 day no hassle return and refund for incompatibility; friendly customer care provided by OpolarnOpolar Laptop Cooler with vacuum fan