Detail Brushless DC motor hard disk motor controller 7V-12V(4010)
The hard disk motor can be rotated at a voltage of 7-12V. The higher the voltage, the faster the speed, and the maximum can reach about 10,000 revolutions.
How to identify the common port of a 4-wire motor: Measure the four terminals with the resistance *1 of the multimeter. One of the terminals has the smallest and equal resistance to the other three terminals. Then this terminal is the COM terminal, that is, the common Terminal. The driver board automatically recognizes the 3-wire or 4-wire brushless motor, and the 4-wire brushless motor can also be disconnected from the COM line.