"Micro Cooling Fan" experts know that if we open the DC cooling fan motors, you can see the DC cooling fan uses a variable frequency motor, coil from the position where it can be identified. Inverter motor control circuit board, control chip DSP function will set the drive devices in one, simplifying the circuit structure. Through the control chip can be programmed to change the motor speed. "Micro Cooling Fan" Why is installed on the computer, the computer can not afford it? A lot of people have experienced computer using a little longer easily dropped, dropped when the "cat" indicator ADSL, LAN my wireless router is normal flashing lights, I laptop is wireless Internet access, if a notebook dropped desktop connection "Micro Cooling Fan" also fall together, ranging from 1 hour 10 minutes dropped time.