Laptop Cooler pad: 1.fully aluminum frame 2.USB connector 3.good for Macbook,Notebook,eBook from 7' to 17'. Laptop Cooler ... within the radiator.3.Put notebook on the cooling pad, direct to the bottom blowing heat notebook.Operating PrincipleNotebook, and heat forced ... , super mute. Applicable to various brands, type, size of notebook computers.Using the USB interface design, no external power supply ...