Features: brand new and high quality Miniature brushless DC motor driver board has short circuit at the output end. The short circuit will not burn the chip, and you can operate it freely. This driver board can drive miniature 3-wire or 4-wire for Hallless brushless motors such as hard disk brushless motors, optical drive brushless motors, etc. The driver board has voltage reverse connection for protection, overcurrent for protection, short circuit for protection, simple wiring, and very economical to use. The hard disk motor can be rotated with a voltage of 7-12V. The higher the voltage, the faster the speed, and the maximum can reach about 10,000 rpm. After the brushless driver board is short-circuited and overcurrent protected, the power indicator will be off. At this for time, the power supply of the driver board should be cut off, and the overcurrent cause should be dealt with before supplying power to the driver board. After the LED power indicator lights up, it can work normally. Specifications: Material:PCB Drive voltage: DC 7-12V Working current: ≤1.2A Speed ​​regulation range: 0%-100% Phase inversion control:Yes Reverse voltage protection:Yes Overcurrent Protection:Yes Short circuit protection:Yes Package Includes: 1x Brushless Motor Driver Board note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.