USB
Items Procedures
Symptoms
● USB devices are not recognized
● USB devices are not charging
Possible causes
USB devices do not have the latest software drivers, port insucient power, or not
compliant.
NOTE: USB Type-C uses a dierent connector entirely
Examples of USB device Not Recognized Troubleshooting steps
1. Unplug USB device and/or restart the computer (wait for 2-5 minutes) to reset
USB port/hub in case of power surge.
2. Soft Reset (9. Soft reset (Default Settings) on page 71) and verify if USB device
is recognized.
3. Verify if USB device is recognized in Device Manager > Universal Serial Bus
Controller, or USB is recognized without Yellow bang.
4. Verify if the latest USB driver or/and USB chipset driver are installed. USB
driver could be removed and reinstalled.
5. Make sure USB device is supported, for example, USB 3.0 device requires
more power drawn (0.9A) from USB port than USB 2.0 device (0.5A). As a
result, identify USB charging port to be used for charging a USB device, or an
external AC power adapter may be required for an external USB storage to
work properly.
6. Test with veried working USB devices (keyboard, mouse, USB key) to make
sure USB ports are functional.
7. Test USB device on a veried working computer to make sure USB device is
not malfunctioning.
Common issues and possible solutions 107
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