Currently, "Inflatable Air Blower" using screw column + CPU heatsink backplate clip has been more and more programs. So when replacing the CPU fan, and there is not much difficulty. But note that, in order to represent the brand Cooler Master, four screws at the bottom of the column will usually have a little snap. If you do not dismantle "Inflatable Air Blower", then four screws column can not be removed, CPU fan will not be replaced. The main component is a transport fan bearings, a long time the lack of oil, will produce noise when such high-speed rotation. Therefore, we only need the "Inflatable Air Blower" bearing a few drops of oil, if you do not use oil instead of sewing machines are also available. But be careful, do not use cooking oil instead, because of its relatively large particles, easy on the bearings injury.