The YubiKey is a USB 1.0/2.0 device (similar to any other USB keyboard) and it works with USB 3 due to the backward compatibility support of USB 3. If you are experiencing issues with your USB 3 port, try the following:
- Test that the YubiKey is working correctly on a USB 2.0 port.
- Download and install the latest drivers for your USB 3 interface. A common producer of the USB 3 is NEC. Research the type of hardware you have and ensure you have the correct drivers.
- Plug a USB hub in your USB port. Insert the YubiKey in one of the USB hub ports. If the YubiKey works, then it could be a mechanical problem with the USB interface.