How to fix portable hard drive keeps disconnecting during transferring




The power supply of USB 3.0 port is 900mA; the power supply of USB 2.0 port is 500mA. It is possible that USB connection does not deliver the required amount of power so it might cause that portable hard drives keeps disconnecting issue during transferring.

Here are solutions about how to this issue:

  1. Connect to a different USB port to make sure if it is the insufficient power supply of 
    USB port issue.
  2. Change a different USB cable in order to make sure if there is no bad connection.
  3. Attach one end of the USB cable to the USB port of computer first (without connecting the portable hard drive), then attach the other end to portable hard drive to ensure to receive stable power supply.
  4. Check whether there are other USB devices or not, if yes, please remove them to ensure the adequate power for the portable hard drive.
  5. Please make sure if there is any firmware update for the portable hard drive.

If the same problem still can't be solved by referring to above solutions, it is necessary to issue RMA repair or replacement request.

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