This is the lack of power supply. If you have to use an extension cable, use an active USB Hub, which is equipped with an external power supply. It is available in the computer city.
answer: Yes, this is mainly determined by the power of the computer to the mobile hard disk.If the cable is too long, it is likely to cause automatic power failure during file transfer, which will cause great damage to the mobile hard disk. My mobile hard disk was powered down due to insufficient power supply.
Therefore, it is recommended not to use the extension cord. If you have to use it, it is recommended to connect the rear U port of the host because the power supply rate is high.
This statement is correct, because poor quality extension cords will lead to insufficient power supply.
1. The power supply standard of Usb 2.0 is about 5V 0.5A.The demand for mobile hard disk is 5V 0.6A.In most cases, 0.6A mobile hard disk can work under 0.5A power supply, while many computers have enhanced the power supply of USB, which is slightly higher than 0.5A. Therefore, it is safe to connect USB directly. 2. However, if it is a front-end or a USB hub, or a USB extension cable is used, if the cable is poor or too long, it will lead to current attenuation and easy to generate insufficient power supply. 3. The USB power supply is insufficient, and the use of the mobile hard disk is unstable. For example, sometimes inserting the mobile hard disk will prompt you to format. In fact, the data is OK, and reinsertion may solve the problem.In addition, when transferring a large amount of data, it is easy to make mistakes or suddenly cannot find the mobile hard disk.
