Mobile hard drives have a voice

Mobile hard sometimes for no reason “beep” sound stopped and then immediately start can be clearly heard the voice of the hard disk to start the motor.

———— Fast is broken should be hard enough supply of gas is clearly the power supply or hard disk interface USB port USB port and power have been behind the board, not the next external 5V HDD with the power that you are completely different

your USB device is a fully

I have 4 mobile hard disk, so the problem is so common a

Is a clear shortage of power supply

but may be due to various

front USB port may be unable to supply such a large current

may be the USB port itself, there have been

Problem may be the consumption of too much hard disk box