I was trying to use my wireless mouse today and I noticed that the Mi Box no longer responds to the Mouse (Wireless Insignia). It has worked fine until today. I have the mouse in a USB 4-port hub. It has always been this setup. Not sure if there is anything I can update on the setting to fix this.
Did you by chance add a new item to the hub in addition to the wireless mouse that was connected before?
I doubt the Mi Box supplies much power to an unpowered hub.