
Regardless, there are a handful of fixes we can try. If the error is only a recent occurrence and you are sure there isn’t any damage, a system error is a likely source. The main reasons for a USB malfunction range from hardware damage to system errors, and even incompatibility.


A lot of the time, it can be from faulty devices and sometimes a faulty computer component, but most of the time, it’s because of a simple system error. The device might be recognized now.A considerable amount of USB problems can arise with computers, both Windows and Mac. If there are more USB root hub options, repeat the same for each one of them. Go to Power Management tab and deselect Allow the computer to turn off this device to save power option.

Right-click USB Root Hub and click Properties.

In this method, go to Device Manager and expand USB Serial Bus controllers. If the Unknown device is still there in Device Manager, repeat the same steps for all Generic USB hub. Click Next and select Close after it is installed. Then select Let me pick from a list of device drivers on my computer. Select Browse my computer for driver software. If there are more than one, right-click the first one and select Update driver software. There will be at least one Generic USB hub. Open Device Manager and select Universal Serial Bus Controllers. For the Unknown Device error, there is another option.
