- Check that the device is inserted correctly.
- Check whether the device’s connector is dirty.
- The connected USB device may not be compatible with the system.
- Try changing the USB connector where it is connected. The device may not be recognized depending on the combination of USB connectors in use.
- In some cases, the system may not recognize the device if an external USB hub is used and more than the allotted number of devices are connected. Try removing unused devices.



