At the SpiceUsbDeviceWidget, all available USB devices are included, but also Keyboard and Mouse devices. Usually, keyboard and mouse devices can be used by VM even if they are not selected in the SpiceUsbDeviceWidget, but some problems occur if keyboard or mouse device was selected, for example, when selecting mouse, host can't use it any more, and the VM can't be used, the resolution is out and in the USB devices. So, Keyboard and mouse USB devices should be filtered to hide them.
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