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3.1.21：USB not recognized

1：Error message​

When the device is connected to USB, it prompts for unrecognized USB devices. As shown in the figure below:

image-20240415103832290

2：Causes and solutions​

  • If you are using a cable that has only a power supply function but no communication function, you can replace the USB cable or use the USB cable that comes with the device.
  • Using the host front USB interface, the front USB interface is wired from the motherboard to the chassis, the quality of the chassis on the market varies greatly, the USB interface aging and other circumstances that lead to USB communication instability, this time you can connect the device to the host rear USB interface to try.
  • If you are using a poor quality HUB extension cable or if you are using an extension cable that is too long and the communication is unstable, you can replace it with a high quality HUB or use the rear USB port.
  • Damage to the device itself can be determined by observing the state of the device and, if necessary, contacting after-sales support and technical support.