Hello Jeff2k, thanks for joining the Intel Community.
I was able to test this behavior and the reason why the mouse disappears from the system is because it is connected to a USB 3.0 port.
The generic USB Hub is going to show the devices connected to a USB 2.0 ports. You can test this by connecting the mouse to a USB 2.0 port, click on refresh and the mouse will appears under description.
Regards,