"Micro Cooling Fan" will be spoiler bracket spindle, motor and bearings will also form a "blind spot", at least in close unfavorable airflow cover the entire heat sink, if not eliminate, it should minimize the blind spot area. But with current technology, bearings for rotating "Micro Cooling Fan" blades remain indispensable, YEN SUN will be in the motor has been improved. FAN fan drive motor is placed outside the box, instead of the traditional axis, leaving only the center of the bearing part, the increase of wind area, even more significantly reduced blind spots. Fan improvement lies in the design of the rotor and the stator winding ring - Increase the size of the rotor ring, set in the entire "Micro Cooling Fan" fan, the only two stator winding mounted on the frame with the circuit section the inside corner.