Before plugging in your USB hub, try these steps to troubleshoot the issue:

1. Check that your device is compatible – make sure the hub is rated to work with your computer’s operating system.
2. Check that your USB hub is functional – make sure it is plugged into the correct port and that it is securely connected.
3. Install the latest drivers – if your device is not recognized, update the device drivers on your computer.
4. Disable and re-enable USB ports – open the device manager, locate the USB ports, disable then re-enable each port.
5. Check for power issues – your hub may require an external power source to work properly.