["brand new and high quality\nMaterial: Plastic and Electrical components\nColor: Green and Black\nThe driver board can drive hard disk brushless motors ,CD-ROM brushless motor and so on ， the micro 3-wire or 4-wire without hall brushless motor ,\nIt's have reverse voltage for protection , Over current for protection , Phase inversion control\nDriver voltage : DC5-12v\nWorking voltage : ≤1.2A\nSpeed adjust :0%-100%\nNote : Brushless motor line of receiving terminal drive plate must be pressed sturdiness, poor contact will lack of phase operation and burn out the chip.Board terminals fixed screw clearance, please use coarser line connected to the board.\nHow to identify four line motor public port: use the resistance of the multimeter * gears test this four terminal,One of the terminals and the other three terminal resistance value of the minimum and equal\nSo it's COM terminal\nSize:6*4.5cm/2.36\"*1.77\"\nQuantity: 1Pc\nNote: Due to the difference between different monitors, the picture may not reflect  the actual color of the item. Thank you!"]