Like pen and electricity, customers in order to pursue the unique needs of use, pen and electricity developers will be in particular in accordance with the different needs of each customer to do research and development, design, in order to achieve consumer expectations. And in the desktop computer, can not be like pen power to provide personal needs of the design, but in terms of performance is not powered, such as its thermal and protective, because the entire computer contains the structure of the host, so whether it is the speed of cooling or waterproof, dust-proof function sits very good.